Dark matter experiment finds no evidence of axions

universe
Credit: CC0 Public Domain

Physicists from MIT and elsewhere have performed the first run of a new experiment to detect axions—hypothetical particles that are predicted to be among the lightest particles in the universe. If they exist, axions would be virtually invisible, yet inescapable; they could make up nearly 85 percent of the mass of the universe, in the form of dark matter.

Axions are particularly unusual in that they are expected to modify the rules of electricity and magnetism at a minute level. In a paper published today in Physical Review Letters, the MIT-led team reports that in the first month of observations the experiment detected no sign of axions within the mass range of 0.31 to 8.3 nanoelectronvolts. This means that axions within this mass range, which is equivalent to about one-quintillionth the mass of a proton, either don't exist or they have an even smaller effect on electricity and magnetism than previously thought.

"This is the first time anyone has directly looked at this axion space," says Lindley Winslow, principal investigator of the experiment and the Jerrold R. Zacharias Career Development Assistant Professor of Physics at MIT. "We're excited that we can now say, 'We have a way to look here, and we know how to do better!'"

Winslow's MIT co-authors include lead author Jonathan Ouellet, Chiara Salemi, Zachary Bogorad, Janet Conrad, Joseph Formaggio, Joseph Minervini, Alexey Radovinsky, Jesse Thaler, and Daniel Winklehner, along with researchers from eight other institutions.

Magnetars and munchkins

While they are thought to be everywhere, axions are predicted to be virtually ghost-like, having only tiny interactions with anything else in the universe.

"As dark matter, they shouldn't affect your everyday life," Winslow says. "But they're thought to affect things on a cosmological level, like the expansion of the universe and the formation of galaxies we see in the night sky."

Because of their interaction with electromagnetism, axions are theorized to have a surprising behavior around magnetars—a type of neutron star that churns up a hugely powerful magnetic . If axions are present, they can exploit the magnetar's magnetic field to convert themselves into , which can be detected with dedicated telescopes on Earth.

In 2016, a trio of MIT theorists drew up a for detecting axions, inspired by the magnetar. The experiment was dubbed ABRACADABRA, for the A Broadband/Resonant Approach to Cosmic Axion Detection with an Amplifying B-field Ring Apparatus, and was conceived by Thaler, who is an associate professor of physics and a researcher in the Laboratory for Nuclear Science and the Center for Theoretical Physics, along with Benjamin Safdi, then an MIT Pappalardo Fellow, and former graduate student Yonatan Kahn.

The team proposed a design for a small, donut-shaped magnet kept in a refrigerator at temperatures just above absolute zero. Without axions, there should be no magnetic field in the center of the donut, or, as Winslow puts it, "where the munchkin should be." However, if axions exist, a detector should "see" a magnetic field in the middle of the donut

After the group published their theoretical design, Winslow, an experimentalist, set about finding ways to actually build the experiment.

"We wanted to look for a signal of an axion where, if we see it, it's really the axion," Winslow says. "That's what was elegant about this experiment. Technically, if you saw this magnetic field, it could only be the axion, because of the particular geometry they thought of."

In the sweet spot

It is a challenging experiment because the expected signal is less than 20 atto-Tesla. For reference, the Earth's magnetic field is 30 micro-Tesla and human brain waves are 1 pico-Tesla. In building the experiment, Winslow and her colleagues had to contend with two main design challenges, the first of which involved the refrigerator used to keep the entire experiment at ultracold temperatures. The refrigerator included a system of mechanical pumps whose activity could generate very slight vibrations that Winslow worried could mask an axion signal.

The second challenge had to do with noise in the environment, such as from nearby radio stations, electronics throughout the building turning on and off, and even LED lights on the computers and electronics, all of which could generate competing magnetic fields.

The team solved the first problem by hanging the entire contraption, using a thread as thin as dental floss. The second problem was solved by a combination of cold superconducting shielding and warm shielding around the outside of the experiment.

"We could then finally take data, and there was a sweet region in which we were above the vibrations of the fridge, and below the environmental noise probably coming from our neighbors, in which we could do the experiment."

The researchers first ran a series of tests to confirm the experiment was working and exhibiting magnetic fields accurately. The most important test was the injection of a to simulate a fake axion, and to see that the experiment's detector produced the expected signal—indicating that if a real interacted with the experiment, it would be detected. At this point the experiment was ready to go.

"If you take the data and run it through an audio program, you can hear the sounds that the fridge makes," Winslow says. "We also see other noise going on and off, from someone next door doing something, and then that noise goes away. And when we look at this , it holds together, we understand how the detector works, and it becomes quiet enough to hear the axions."

Seeing the swarm

In 2018, the team carried out ABRACADABRA's first run, continuously sampling between July and August. After analyzing the data from this period, they found no evidence of axions within the mass range of 0.31 to 8.3 nanoelectronvolts that change electricity and magnetism by more than one part in 10 billion.

The experiment is designed to detect axions of even smaller masses, down to about 1 femtoelectronvolts, as well as axions as large as 1 microelectronvolts.

The team will continue running the current experiment, which is about the size of a basketball, to look for even smaller and weaker axions. Meanwhile, Winslow is in the process of figuring out how to scale the experiment up, to the size of a compact car—dimensions that could enable detection of even weaker axions.

"There is a real possibility of a big discovery in the next stages of the experiment," Winslow says. "What motivates us is the possibility of seeing something which would change the field. It's high-risk, high-reward physics."


Explore further

Team simulates a magnetar to seek dark matter particle

More information: Design and implementation of the ABRACADABRA-10 cm axion dark matter search, journals.aps.org/prd/accepted/ … a284b0eb5cd5d60ea137
Journal information: Physical Review Letters

Citation: Dark matter experiment finds no evidence of axions (2019, March 28) retrieved 22 April 2019 from https://phys.org/news/2019-03-dark-evidence-axions.html
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Mar 28, 2019
Dark matter experiment finds no evidence of axions?

Not a surprise, all dark matter experiment finds no evidence of any kind of dark matter.

Regardless, axions were never detected yet, just hypothesized.

Mar 28, 2019
Another blow for the axion hypothesis. There's something there, making dark matter effects, but we still don't have a clue what it is. We've found a lot of things it's not.

Mar 28, 2019
We've found a lot of things it's not.
......dark matter

Mar 28, 2019
This comment has been removed by a moderator.

Mar 28, 2019
Another fantasy bubble burst...you can't just make it up and call it science.

Doctor-Z: the matter you are referring to has been accounted for. This nature article (see link) outlines that around 40% of ordinary matter was yet to be accounted for but now has been:

https://www.natur...-05432-2

Mar 28, 2019
@DrZ: please give your spiel chequer a kick: 'Tis Kuiper, not Khyber...

FWIW, gotta wonder if the apparent absence of 'Dark Matter' here-about is due to the significantly depleted 'Local Bubble' our Solar System currently inhabits...
;-)

Mar 28, 2019
Very clever, these hyper-intelligent pan-dimensional beings. Glad they are on the payroll.

I wonder if all of the light in the Universe has been weighed. Seems to be quite a lot of it.

Mar 28, 2019
I wonder if all of the light in the Universe has been weighed. Seems to be quite a lot of it.
.......and every EM Wave carries gravity because it is transformed Mass.The mass equivalence of an EM Wave can be quantified by either measuring or calculating it's inherent field of gravity. Einstein did it.

Mar 29, 2019
I hypothesize that "dark matter" is like non cohesive atoms. Imagine yourself in a turbulent swimming pool, counting the vortices (atoms and such) and wondering where the rest of the water is. Light, just like sound, requires a medium. Black holes have no medium...light never enters one...you can't see them because they are empty space(hence the lensing effect). Like they eye of a hurricane. Einstein was wrong when he reified space and time.

Mar 29, 2019
It is idiotic to think we could ever detect the smallest matter of the universe as as such would be the contents of a black hole which is observable only from the effects of matter on the outside. Actually, the contents of a black hole must be spherical in shape and can assume no other form of geometry; a simulation of what a black hole does once it is past the event horizon is form spheres around a point, but the gravity is so strong that it amalgamates all the spheres into one sphere which can be thought of as pure energy. It was idiotic to postulates the existing of dark matter to begin with (ripe with logic flaws), and it remains increasingly stupid to support its existence where the data that seeks it's existence does not confirm its existence. Gravity has been defined locally as a solar system by definition that is to say that even Einsteins's Field equations are based on Newton and therefore will continue to lie when examining things of much larger scale such as a galaxy.

Mar 29, 2019
The understanding of gravity is wrong, it is not that its a whole new gravity, just a terrible understanding based on the scale that we "know" gravity at which is the solar scale. It paints an inaccurate picture of gravity. Einstein let Newton corrupt or make imperfect his works. Simply put, Gravity is an effect felt and caused by mass by warping space/time which are a fabric. However, the reality is space/time is warped throughout a galaxy which has unexpected consequences (new gravity) on celestial objects in a galaxy. The rotation curve for the milky way is what it is because it perfectly reflects the entire map of time/space distortions of the milky way and its agglomerated effects which is difficult to explain both in english and in math. For example, Stars in the milky way appear to rotate around Sagittarius A, but this is incorrect, they are simply rotating around the area of space/time which is most disturbed which is an area much greater than Sagittarius A

Mar 29, 2019
It is because of this that the rotation curve flattens, because stars are not rotating around an object, but rather around warped time/space itself therefore newton's laws do not apply.

Mar 29, 2019
So, let's review here:

MOND and other "field" theories striking out.
WIMPs striking out.
Axions striking out.

What's left?

Mar 29, 2019
Had a look on Wikipedia. The rest of the hypotheses are even weirder. Whatever dark matter is, it's not obvious. Something tricky is going on.

Mar 29, 2019
The problem with epicycles is they wasted a lot of valuable time and brain power.

Mar 29, 2019
There's something there. We can see it.

You can deny there's such a thing as light if you like, @Jax. I won't listen to that either.

Mar 29, 2019
I hypothesize that "dark matter" is like non cohesive atoms. Imagine yourself in a turbulent swimming pool, counting the vortices (atoms and such) and wondering where the rest of the water is. Light, just like sound, requires a medium. Black holes have no medium...light never enters one...you can't see them because they are empty space(hence the lensing effect). Like they eye of a hurricane. Einstein was wrong when he reified space and time.

If light does not enter the black hole, consider the vast amount of light falling towards a blackhole, where does it go then ? It can't just keep piling up around it it would have a vastly observable effect.

Mar 29, 2019
What's there is they got the red shift backwards. Everything else is hand waiving.

Mar 29, 2019
And nobody noticed for 50 years.

Wow. Just wow. You need stronger meds.

You're saying we didn't see what we have photographic plates, film, and computer images of.

I mean, OK, but do you really expect anyone who has seen this data to believe you?

A backwards red shift is a blue shift. Maybe you forgot.

Mar 29, 2019
Haven't we had this discussion already? You must be a troll. Is that why you post here neurotically?

Anyhow, Empirical evidence suggests that C is decreasing by 2 cm/s/yr. If you hold the energy state of the putative photons constant at the epoch of emission, then that completely accounts for the portion of any Z value typically associated with expansion. Hubble suspected as much.

The epicycles are there to support the Big Bang for the same reason as the original epicycles: a creation event making earth the center of the universe.

Mar 29, 2019
No, we had part of this discussion before. Right up to where I asked you what scientific papers published in credible journals of scientific findings support your claims. Then you went and hid.

Now I'm asking how anyone can mistake redshift and blueshift, as you claim. You know, considering the base frequency determines the distance between the spectral lines, and the ratios of the lines is determined by the element.

Mar 29, 2019
I'm not suggesting there is blue shift.

The redder light from more distant galaxy SN Ia data is the result of faster photons being created with constant energy states in the past, and then the speed of light decreasing by 2 cm/s/yr.

I cited them, you are lying. Do the research and do the math. -2cm/s/yr.

Mar 29, 2019
Then cite them again.

Links and quotes please.

And you certainly haven't cited anything to support your latest outrageous claim, that blueshift has been mistaken for redshift, nor will you ever.

Mar 29, 2019
You fail to grasp the essence of my claim with your blue shift nonsense.

That's ok you can disagree.

Mar 29, 2019
Then what's "got the redshift backwards" mean?

Mar 29, 2019
You are so literal. It just means "got it wrong."

And for the sake of completeness, it is also a subtle allusion to my suspicion that, if the universe is not expanding, then it might be contracting, particularly given the attractor and all that. What's more, an older contracting universe would have older galaxies spinning faster than younger galaxies. So that's a hunch.

Mar 29, 2019
Ummmmm, OK, wrong exactly how?

For the sake of completeness.

You should probably consider the fact that I have seen such plates. There are a bunch of them around.

Mar 29, 2019
Yes. Dark matter experiment finds no evidence of axions - as well as no evidence of Dark Matter.
It was inevitable, of course.

I see that physorg has gotten a new format for the Comments arena. Also, I notice that there is no longer a way to see the 1 - 5 ratings for each commentator. And no more gang-rating also.
Wise choice, Physorg. Kudos to the staff and administrators.

Mar 29, 2019
Yes. Dark matter experiment finds no evidence of axions - as well as no evidence of Dark Matter.
It was inevitable, of course.

I see that physorg has gotten a new format for the Comments arena. Also, I notice that there is no longer a way to see the 1 - 5 ratings for each commentator. And no more gang-rating also.
Wise choice, Physorg. Kudos to the staff and administrators.
says I

Well, it appears that I was mistaken and that physorg did not remove the ratings pages.
That would mean that the hostiles will still be able to demote all posts they wish to demote to a lower rating - even if undeserved and the comment itself was good. But it is still too early to tell.

Mar 29, 2019
This comment has been removed by a moderator.

Mar 29, 2019
You fail to grasp the essence of my claim with your blue shift nonsense.

That's ok you can disagree.


@JaxPavan

Could you share these links please ?
Thanks

Mar 29, 2019
Yes. Dark matter experiment finds no evidence of axions - as well as no evidence of Dark Matter.
It was inevitable, of course.

I see that physorg has gotten a new format for the Comments arena. Also, I notice that there is no longer a way to see the 1 - 5 ratings for each commentator. And no more gang-rating also.
Wise choice, Physorg. Kudos to the staff and administrators.
says I

Well, it appears that I was mistaken and that physorg did not remove the ratings pages.
That would mean that the hostiles will still be able to demote all posts they wish to demote to a lower rating - even if undeserved and the comment itself was good. But it is still too early to tell.

Finaly SEU, every one can say good ridance

Mar 29, 2019
Can I discus ?

Mar 29, 2019
This comment has been removed by a moderator.

Mar 29, 2019
I hypothesize that "dark matter" is like non cohesive atoms. Imagine yourself in a turbulent swimming pool, counting the vortices (atoms and such) and wondering where the rest of the water is. Light, just like sound, requires a medium. Black holes have no medium...light never enters one...you can't see them because they are empty space(hence the lensing effect). Like they eye of a hurricane. Einstein was wrong when he reified space and time.

If light does not enter the black hole, consider the vast amount of light falling towards a blackhole, where does it go then ? It can't just keep piling up around it it would have a vastly observable effect.


Like a 5000 light year long jet... https://scitechda...ck-hole/


Mar 29, 2019
Simply put, Gravity is an effect felt and caused by mass by warping space/time which are a fabric. However, the reality is space/time is warped throughout a galaxy which has unexpected consequences (new gravity) on celestial objects in a galaxy.


There is no space/time bending. That is only a perception.

Our issue here is that we believe there is only one gravity type.

Also as a loop quantum gravity is a way to quantise space time while keeping what General Relativity taught us, is bullshit. General relativity is also wrong. The math simply breaks at several scales and we do not know how to quantify that. Then we come up with bullshit fillers to kinda make it work.

After that we go chase some suposed particles and effects, which would explain that false theory. dark energy,.. dark matter? LOL

Read up on Erik Verlinde theory. Now there is a man thinking outside the box and what textbooks tell us.

Mar 29, 2019
If light does not enter the black hole, consider the vast amount of light falling towards a blackhole, where does it go then ? It can't just keep piling up around it it would have a vastly observable effect.
........but schneibo has PROOF from 19th Cosmologists that this is exactly how black holes form, Yeah, proof from the same bunch who brought us Eather Theory, right Da Schneibo?

Mar 29, 2019
Uh, oh, the Pop-Cosmology crowd living here are not gonna like this new Comments format, no place for piling on their phony 5 Star votes for their multiple accounts.

Castrateds & Schneibos now really have their promotions of Pop-Cosmology fanstasy cut out for them because they won't have the incentive to come here for the purpose of garnering Stars.

Mar 29, 2019
Read up on Erik Verlinde theory. Now there is a man thinking outside the box and what textbooks tell us.


Not going very well, is it?

https://phys.org/...ity.html

Mar 29, 2019
Not going very well, is it?
.........your multiple accounts you used for piling up Star ratings for yourself?

Mar 29, 2019
Read up on Erik Verlinde theory. Now there is a man thinking outside the box and what textbooks tell us.


Not going very well, is it?

https://phys.org/...ity.html


Those are jsut conjecture and tests done on earth.

They need to be perfomed in the vacum of space, which is costly.

It is easy to dismiss someone, by offering a halfarsed attempt. It is like building you a paper carriage on paper straw wheels and saying, "Here is a car for you, such as it is,... it will do, since the wheels are spinning".

Mar 29, 2019
Read up on Erik Verlinde theory. Now there is a man thinking outside the box and what textbooks tell us.


Not going very well, is it?

https://phys.org/...ity.html


Those are jsut conjecture and tests done on earth.

They need to be perfomed in the vacum of space, which is costly.

It is easy to dismiss someone, by offering a halfarsed attempt. It is like building you a paper carriage on paper straw wheels and saying, "Here is a car for you, such as it is,... it will do, since the wheels are spinning".


Really? Says whom? Have they contacted the authors of the paper, or replied to it in the scientific literature, calling it 'halfarsed'? Or is that just your unqualified opinion on a comments section?

Mar 29, 2019
Really? Says whom? Have they contacted the authors of the paper, or replied to it in the scientific literature, calling it 'halfarsed'? Or is that just your unqualified opinion on a comments section?


The problems with the force of gravity are that it doesn't work in a manner similar to any other forces and there isn't enough observable mass to explain reality without creating dark matter.

If you have to create some invisible entity to make your theory right, your theory is wrong no matter how close your approximation is.

Also read from Jose Alvarez Lopez, who actually went to piece it all together and pointed out flaws, proposing his own theories, which still hold water. Much to the dismay of the establishment.

Mar 29, 2019
WIMPs might be a dead end, but it's about all they can test for at the moment. If the TPs don't like it, they're free to propose another path.

Mar 29, 2019
The problems with the force of gravity are that it doesn't work in a manner similar to any other forces and there isn't enough observable mass to explain reality without creating dark matter.
If you have to create some invisible entity to make your theory right, your theory is wrong no matter how close your approximation is.
Also read from Jose Alvarez Lopez, who actually went to piece it all together and pointed out flaws, proposing his own theories, which still hold water. Much to the dismay of the establishment.


Really ?
So how did that work with Higgs and his boson ?

And what is this now ?
https://phys.org/...ack.html

The Equivalence principle getting confirmations - the principle Lopez wasn't happy about

Mar 29, 2019
@robjoy
there isn't enough observable mass to explain reality without creating dark matter.

If you have to create some invisible entity to make your theory right
"dark matter" is a placeholder name used to explain observations
https://en.wikipe...evidence

so, it's not something "created to make a theory right", it's an explanation for observed phenomena

moreover, it's being tested as well, along with alternatives as per the scientific method and principles


Mar 29, 2019
it's being tested as well, along with alternatives
......the "alternatives" being Pop-Cosmology Fantasy.

Mar 29, 2019
it's being tested as well, along with alternatives
......the "alternatives" being Pop-Cosmology Fantasy.


Why are you commenting? You wouln't know science if it kicked you up the backside.

Mar 29, 2019
it's being tested as well, along with alternatives
.
.....the "alternatives" being Pop-Cosmology Fantasy.


Why are you commenting?
.......better question is, why are you? It used to be to see how many 5 Stars you could get for being the most foul mouthed ranting lunatic in the chatroom, now that incentive is gone, same for Stumpy the stub. Your alternate reality is gone & you're petrified that you may not survive more than a few more days to come.

Mar 29, 2019
We got more data, nice! Unfortunately and not surprisingly, the result is that "we need more data".

By the way, I did not confirm behind the paywall, but the illustrations seems to show 3D printed parts in the experiment, that is edge.

@DS: "So, let's review here: MOND and other "field" theories striking out. WIMPs striking out. Axions striking out."

(Good to see some comments among the many trolls!)

Most everything else gravity theory than GR is effectively dead ever since the neutron star merger observation. But I would not say that WIMPs are really dead, but the expected natural ones are just about - unexpectedly - eliminated by recent electron sphericity observations.

- tbctd -

Mar 29, 2019
- ctd -

And I have no idea of axions as I was holding out for apriori likely WIMPs. The article claim a narrow exclusion in a broad possible range. My personal problem with axions is that final Planck summary sees a survivor bias universe. There is then no apriori support for a necessary axion mechanism - the absence of strong CP. which they make. may just be. But it is way too early to count coup.

@Nomadd: [Is this NSF Nomadd? A slow Boca Chica SpaceX entertainment weekend then.] "WIMPs might be a dead end, but it's about all they can test for at the moment. If the TPs don't like it, they're free to propose another path."

@CS: "placeholder".

That is not a technical term in science, but a math term for a trick to balance equations. Dark matter is CDM, Cold Dark Matter, as observed in current inflationary cosmology modeled as a LCDM FLRW universe - Lambda CDM general relativity universe. As you link to, observed in many ways, the most locally resolved is lensing.

Mar 29, 2019
@torbjorn, nice to see someone gets that a failed experiment can be as revealing as a successful one. One of the most important failed experiments in the history of physics was the Michelson-Morley experiment, which failed to demonstrate the existence of the aether. It threw physics into an uproar from 1887 to 1905, when Einstein proposed the special relativity theory and explained why it had failed.

Mar 29, 2019
Dunno about you guys, but I get the Phys Org site has changed its web interface as its sister site MedicalXpress, no "likies" anymore.

I know that we should react to the many trolls - as they want, and according to research take as confirmation of their immoral behavior and their erroneous opinion and lack of knowledge - because it is moral and what science is about: communication. But the pulling of "like" options means the task becomes too burdensome. I am thinking of just responding to the sane comments - whether (more or less in faith made) questions or actually discussing the article - which should be equivalent to non-trolling genuinely science interested readers.

This thread had an obvious rate of comments vs trolls of 8/35 (not counting responses to trolls) or 20 % in 24 hours, which is awful signal-to-noise ratio. What irks me is that some science is fouled by such behavior. Of course, most threads are troll free, they are insane/incapable, not many.

Mar 29, 2019
I am thinking of just responding to the sane comments - whether (more or less in faith made) questions or actually discussing the article - which should be equivalent to non-trolling genuinely science interested readers.
It's really easy now; identify troll, block troll. They can't downvote you any more so there's no longer any reason not to. I'm perfectly content to simply block them and move on. If they never get any replies they will soon tire of trolling.

Mar 29, 2019
@DS: Well, whatever you do the rate of fail to success is something like 10 to 1. The trick is to make the failz a learning experience. Science as a human endeavor is learning as it goes, and the absence of publishing failed experiments due to the market of ideas (and grants!) promoting success is now biting us as statistics gets more important (for robustness, precision, understanding). We need to publish the failures to correct for that bias, and we can also use exclusion experiments as the one here to constrain possibilities.

We need to make correct enough (understandable and publishable) failures. It is a shore, an art and hopefully not now a totally wasted experience.

Mar 29, 2019
Oops, I C&P omitted the comment part to Nomadd. Again:

@Nomadd: [Is this NSF Nomadd? A slow Boca Chica SpaceX entertainment weekend then.] "WIMPs might be a dead end, but it's about all they can test for at the moment. If the TPs don't like it, they're free to propose another path."

So I am not always onto US acronyminity of terms. If this is to be read as Theoretical Physicists, I believe their current pet theory is axions due to WIMP absence (so far).

@DS: Thxs, I believe that is the best. "Torbjörn used troll block. It was super effective."

[Hmpf. The new interface uses HTML so I can spell my name in Swedish. Yet not the extended set with emojis, so I can emote better. Oh, well.]

Mar 29, 2019
Honestly, it's fun trolling the trolls. So I'll prolly have to wean myself off it.

Honestly, it was always a dumb idea to let someone make a post rating against someone who had blocked them. And prevent making post ratings against someone you have blocked. This was an asymmetrical situation taken wide advantage of by the trolls.

If there will be ratings, one is only allowed to rate those one has not blocked and not been blocked by. Generally I'll now block folks I'd vote ones for. I'm not sure but I think three categories would do:
1. I think this person screwed up. I will explain how.
2. I think this person got some things right, and some things wrong. I will explain which and how.
3. I think this person got it all right. I may elect to expand upon or (to my mind) illuminate their points.

Mar 29, 2019
Uh, oh, the Pop-Cosmology crowd living here are not gonna like this new Comments format, no place for piling on their phony 5 Star votes for their multiple accounts.

Castrateds & Schneibos now really have their promotions of Pop-Cosmology fantasy cut out for them because they won't have the incentive to come here for the purpose of garnering Stars.

says Benni

Yes, I've noticed that also. In fact, they DO seem to have become a slight bit demoralized since physorg rid itself of the antagonistic phoniness of the rating system. The Five-Star Club is still here, but has been declawed/defanged somewhat. It is possible that someone in the organisation was read "the Riot Act", so to speak, due to the needs of schoolchildren not being met - what with all the meanness and nasty language that children ought not to read or hear in this site.

Mar 29, 2019
Yes. Dark matter experiment finds no evidence of axions - as well as no evidence of Dark Matter.
It was inevitable, of course.

I see that physorg has gotten a new format for the Comments arena. Also, I notice that there is no longer a way to see the 1 - 5 ratings for each commentator. And no more gang-rating also.
Wise choice, Physorg. Kudos to the staff and administrators.
says I

Well, it appears that I was mistaken and that physorg did not remove the ratings pages.
That would mean that the hostiles will still be able to demote all posts they wish to demote to a lower rating - even if undeserved and the comment itself was good. But it is still too early to tell.

Finaly SEU, every one can say good ridance
says granville

Yes sir. It is a new day in physorg. The ratings 1 - 5 is no more and we can concentrate on the REAL science as well as the NEW. And I see that it is easier for Moderators to patrol the language used by commentators.

Mar 30, 2019

Yes sir. It is a new day in physorg. The ratings 1 - 5 is no more and we can concentrate on the REAL science as well as the NEW. And I see that it is easier for Moderators to patrol the language used by commentators.


You know nothing about science. As you regularly show.

Mar 30, 2019
Little Children Can Now Safely Read Phys.org
SEU> I see that phys.org has gotten a new format for the Comments arena. Also, I notice that there is no longer a way to see the 1 - 5 ratings for each commentator. And no more gang-rating also.
Wise choice, Physorg. Kudos to the staff and administrators. says


Finaly SEU, every one can say good riddance says granville


SEU> Yes sir. It is a new day in physorg. The ratings 1 - 5 is no more and we can concentrate on the REAL science as well as the NEW. And I see that it is easier for Moderators to patrol the language used by commentators.

The only restriction on little children reading phys.org
Is the foul language in the comments
As this recent change on the long defunct Five Star Club
The obsolete ratings
Only needs
That
Final tweak
Phys.org
Remove the existing ratings on the user's comments page
as
Our pages are a record of our comments only!

p.s. then the five star club will be truly history

Mar 30, 2019
Yes, I've noticed that also. In fact, they DO seem to have become a slight bit demoralized since physorg rid itself of the antagonistic phoniness of the rating system.


A "bit demoralized"? That's a mild way of putting it when a bomb has just exploded directly over your head & you become so shell shocked that the Schneibos & CastrOAteds most likely never got any sleep last night, they tossed & turned in bed all night long because their last outpost of FANTASY (the 5-Star Club) was taken away from them.

Look at all the monikers that are now dropping off the Comments pages. I'd wager by the end of next week half of the monikers of Pop-Cosmology Culture that was living here will be gone.

How 'bout you Schneibo? How much sleep did you lose last night?

And we just know CastrOAted is absolutely enraged how quickly his name calling rants can no longer be fed into the discussions of those who want to have serious discussions about REAL SCIENCE.

Mar 30, 2019
And we just know CastrOAted is absolutely enraged how quickly his name calling rants can no longer be fed into the discussions of those who want to have serious discussions about REAL SCIENCE.


You don't know any science. What are you talking about?

Mar 30, 2019
And we just know CastrOAted is absolutely enraged how quickly his name calling rants can no longer be fed into the discussions of those who want to have serious discussions about REAL SCIENCE.


You don't know any science. What are you talking about?
........how does it feel being irrelevant? Lonely huh?

Mar 30, 2019
And we just know CastrOAted is absolutely enraged how quickly his name calling rants can no longer be fed into the discussions of those who want to have serious discussions about REAL SCIENCE.


You don't know any science. What are you talking about?
........how does it feel being irrelevant? Lonely huh?


What are you talking about? I still understand science; you don't. That is not going to change. How does it feel to be stupid?

Mar 30, 2019
And we just know CastrOAted is absolutely enraged how quickly his name calling rants can no longer be fed into the discussions of those who want to have serious discussions about REAL SCIENCE.


You don't know any science. What are you talking about?
........how does it feel being irrelevant? Lonely huh?


What are you talking about? I still understand science; you don't. That is not going to change. How does it feel to be stupid?
......I remind you again about your Anthropology Degree you've been here bragging about in the past.......that there's not much science behind wandering around in the tall grass & weeds picking old bones, grade school kids do that too, so it's understandable why you majored in Anthropology at the University of Auckland, NZ back in the 70's.

Mar 30, 2019
.....I remind you again about your Anthropology Degree you've been here bragging about in the past.......that there's not much science behind wandering around in the tall grass & weeds picking old bones, grade school kids do that too, so it's understandable why you majored in Anthropology at the University of Auckland, NZ back in the 70's.


Reported. Deliberate lying. Get a life, you sad wretch. And get an education while you're at it.

Mar 30, 2019
No doubt dark matter exists. But one should look at the right place to find it. I don't think dark matter is WIMPS or Axions or sterile neutrinos. If so, we should have found them by now. Especially with the kind of sensitive equipment being used. Searching for things like WIMPS/Axions is just a big waste of time and money.
I think dark matter is something quite different. In my paper titled: "Clusters of microscopic closed 2-brane entities as a possible candidate for dark matter & dark energy," I have proposed dark matter to be extra-dimensional matter trapped in closed 2-brane entities that are continuously generated by quantum fluctuations. I call these bubble-like entities as repellons. In the paper, besides suggesting where exactly to look for repellons, I have also proposed several easily doable tests that can confirm or falsify my proposal. To know more, please read: https://medium.co...38c71f6c

Mar 31, 2019
axion coupling gion only .so finding difficult.

Mar 31, 2019
.....I remind you again about your Anthropology Degree you've been here bragging about in the past.......that there's not much science behind wandering around in the tall grass & weeds picking old bones, grade school kids do that too, so it's understandable why you majored in Anthropology at the University of Auckland, NZ back in the 70's.


Reported. Deliberate lying. Get a life, you sad wretch. And get an education while you're at it.
.........my Engineering degree has been a good foundation of my competency to be in this chatroom providing REAL SCIENCE commentary, you on the other hand with a degree in Anthropology have nothing to offer but name calling rants, why is that?

Mar 31, 2019
.........my Engineering degree has been a good foundation of my competency to be in this chatroom providing REAL SCIENCE commentary, you on the other hand with a degree in Anthropology have nothing to offer but name calling rants, why is that?


Reported. Deliberately lying. You are a pathological liar. You are the saddest person on this site. Which is not a chatroom, you clown. You know nothing about any science. As has been shown repeatedly. Get an education.

Mar 31, 2019
.........my Engineering degree has been a good foundation of my competency to be in this chatroom providing REAL SCIENCE commentary


Says the poser who said this:

You don't even know what the decay rate of a free neutron in beta decay is do you? It's 15 minutes.

If a free neutron ACTUALLY had a half-life decay rate it would be exactly HALF of 15 minutes, 7.5 and half it's mass would be gone, but that never happens because free neutrons do not have a half-life decay rate.


Lol.

Read more at: https://phys.org/...html#jCp

There is plenty more.

Mar 31, 2019
No doubt dark matter exists
Why?

But one should look at the right place to find it.
Where?

Mar 31, 2019
"You don't even know what the decay rate of a free neutron in beta decay is do you? It's 15 minutes."

"If a free neutron ACTUALLY had a half-life decay rate it would be exactly HALF of 15 minutes, 7.5 and half it's mass would be gone, but that never happens because free neutrons do not have a half-life decay rate."

.......and you as one with an Anthropology degree cannot comprehend why the above two paragraphs are TRUE. They are true because a neutron is not a RADIO-ISOTOPE, but why should the chatroom expect an Anthropologist to know this?

Mar 31, 2019

.......and you as one with an Anthropology degree cannot comprehend why the above two paragraphs are TRUE. They are true because a neutron is not a RADIO-ISOTOPE, but why should the chatroom expect an Anthropologist to know this?


Reported you pathetic liar. And it is not a chatroom, you weirdo. And the paragraphs above are just evidence of how uninformed you are. You have been shown in the scientific literature that you are wrong. Keep posting garbage that directly refutes the evidence, and you will be further reported for trolling.

Mar 31, 2019
Free-Neutron Beta-Decay Half-Life
C. J. Christensen et al.
https://journals....D.5.1628

Cloud-Chamber Measurement of the Half-Life of the Neutron
N. D'Angelo
https://journals.....114.285

The half-life of the free neutron
Christensen, C. J. et al.
http://adsabs.har...26...11C

Analysis of neutron β-decay
D.H.Wilkinson
https://www.scien...82900513

Etc.

Mar 31, 2019
Free-Neutron Beta-Decay Half-Life
C. J. Christensen et al.
https://journals....D.5.1628

Etc.
.......and YOU don't understand even in the slightest what the authors are writing about. This is what happens when an Anthropologist like you tries being the one giving lectures to an Engineer/Scientist like Benni, one who spent six years in Engineering School studying Nuclear/Electrical Engineering, as opposed to your farce studies in Anthropology which you imagine makes YOU some kind of a Scientist when all you are is a bone picker wandering around in the tall grass & weeds.

Mar 31, 2019
.........my Engineering degree has been a good foundation of my competency to be in this chatroom providing REAL SCIENCE commentary, you on the other hand with a degree in Anthropology have nothing to offer but name calling rants, why is that?


Reported. Deliberately lying. You are a pathological liar. You are the saddest person on this site. Which is not a chatroom, you clown. You know nothing about any science. As has been shown repeatedly. Get an education.
says Castrovagina

As to the physorg phorums - it is also appropriate to refer to such phorums as "chatrooms". All YOU are doing in this venue is chatting away with mainly nonsense and hostile words. And you seem to be reverting to your old ways of nasty behaviour toward your fellow commentators.
When will you EVER grow up, jonesy?

Mar 31, 2019
All YOU are doing in this venue is chatting away with mainly nonsense and hostile words. And you seem to be reverting to your old ways of nasty behaviour toward your fellow commentators.
When will you EVER grow up, jonesy?
......he doesn't have a deep enough well of knowledge he can draw on whereby he can actually have a cogent thought of his own. Constant & persistent name calling rants are are the surest evidence of how shallow his well of REAL science is.

Apr 01, 2019
Still a little bit of WIMP anergy space to explore, and a lot of light particle (for example axion) energy space too. We're only just getting started. Proclaiming it's "failed" is premature ejaculation. Typical of trolls.

Apr 01, 2019
Per my experimental results dark matter is nothing but electrons that are orthogonal to regular electrons in our universe

Apr 01, 2019
Per my experimental results dark matter is nothing but electrons that are orthogonal to regular electrons in our universe


Gibberish.

Apr 01, 2019
.........my Engineering degree has been a good foundation of my competency to be in this chatroom providing REAL SCIENCE commentary, you on the other hand with a degree in Anthropology have nothing to offer but name calling rants, why is that?


Reported. Deliberately lying. You are a pathological liar. You are the saddest person on this site. Which is not a chatroom, you clown. You know nothing about any science. As has been shown repeatedly. Get an education.
says Castrovagina

As to the physorg phorums - it is also appropriate to refer to such phorums as "chatrooms". All YOU are doing in this venue is chatting away with mainly nonsense and hostile words. And you seem to be reverting to your old ways of nasty behaviour toward your fellow commentators.
When will you EVER grow up, jonesy?


Huh? I'm not the one spouting unscientific garbage, and claiming to be possessed by an alien lizard.

Apr 01, 2019
Dear Old jonesy
Castrogiovanni> Huh? I'm not the one spouting unscientific garbage, and claiming to be possessed by an alien lizard

So that you keep a low profile, jonesy
to keep below the radar
so
to speak, jonesy
as
your comment :- "Huh? I'm not the one spouting unscientific garbage, and claiming to be possessed by an alien lizard"
does
not seem to be in keeping
with
the ethos
of
Dark matter experiment finds no evidence of axions
just
in case you have lost the plot jonesy
you
should seriously consider
jonesy
in
reporting your self
for
not Staying on topic. Avoid pointless verbiage
as
"Stay on topic. Avoid pointless verbiage" are your own words, jonesy

Apr 01, 2019
Thank you jonesy

At least
you have
seen the pointlessness
of
keeping to the letter of the ethos
as
your good self
has shown that in practice
it
is not practical
as
it inevitably means
Dear old jonesy reporting dear old jonesy

Apr 01, 2019
This comment has been removed by a moderator.

Apr 01, 2019
Dear old jonesy
or
Castrogiovanni
Have you not heard of the little boy who cried wolf?
You are that little boy

Apr 01, 2019
This comment has been removed by a moderator.

Apr 01, 2019
a lot of light particle (for example axion) energy space too
So, sterile neutrinos would still be in the game?

Talking of "failed", and with the indomitable Benni in mind, I heard today on the grapevine that a "groundbreaking result from the EHT" (Event Horizon Telescope) is due to be announced on April 10th in Brussels. I wonder what that might be? Any ideas, Benni?

Apr 01, 2019
a lot of light particle (for example axion) energy space too
So, sterile neutrinos would still be in the game?

Talking of "failed", and with the indomitable Benni in mind, I heard today on the grapevine that a "groundbreaking result from the EHT" (Event Horizon Telescope) is due to be announced on April 10th in Brussels. I wonder what that might be? Any ideas, Benni?


https://www.eso.o...nn19018/

Media Advisory: Press Conference on First Result from the Event Horizon Telescope

When: On 10 April 2019 at 15:00 CEST
Where: The press conference will be held at the Berlaymont Building, Rue de la Loi (Wetstraat) 200, B-1049 Brussels, Belgium. The event will be introduced by European Commissioner for Research, Science and Innovation, Carlos Moedas, and will feature presentations by the researchers behind this result.
What: A press conference to present a groundbreaking result from the EHT


Apr 01, 2019
Well, my question "I wonder what that might be?" was meant to be tongue-in-cheek... guess I should turn down the irony-regulator a notch or two.

Thanks to Castro for the link (which I had anyways)...

Apr 01, 2019
Well, my question "I wonder what that might be?" was meant to be tongue-in-cheek... guess I should turn down the irony-regulator a notch or two.

Thanks to Castro for the link (which I had anyways)...


Yep, 'groundbreaking' seems to imply that they are not going to be saying, "we didn't see anything." :) Amazing stuff for a collaboration that Benni lied about having closed down due to its failure!

Apr 05, 2019
@SkyLigt
@Castrogiovanni
@Benni.

From @SkyLight:
I heard today on the grapevine that a "groundbreaking result from the EHT" (Event Horizon Telescope) is due to be announced on April 10th in Brussels. I wonder what that might be?Any ideas, Benni?
From @Castrogiovanni:
Yep, 'groundbreaking' seems to imply that they are not going to be saying, "we didn't see anything." :) Amazing stuff for a collaboration that Benni lied about having closed down due to its failure!
A REMINDER TO ALL: History shows that many 'ground breaking' discoveries were made while looking for something else entirely! :)

So the odds are not that bad that the 'ground breaking' discovery to be announced on the 10th of this month may be SOMETHING ELSE ENTIRELY that was UNEXPECTED or PREVIOUSLY UNSEEN, but now observed SERENDIPITOUSLY while (still?) looking for the BH EH 'shadow' itself.

Anyway, we'll all soon know. Cheers. :)

Apr 07, 2019
History shows that many 'ground breaking' discoveries were made while looking for something else entirely!
And if there's anything to be learned from the products of your own constant narcissistic attention-seeking, it is that your comments are devoid of scientific insight and meaning, and hence worthless.

Take your latest one: that the groundbreaking discovery to be announced by the EHT collaboration may well have nothing to do with what members of that collaboration have been striving for so long to achieve. Which amounts to a bunch of text signifying precisely nothing.

Care to predict exactly what they're going to announce? Go on - put your "expertise" in the subject on the line and make a prediction as to what the people at EHT are actually going to announce. If you can't do that - and I predict you can't, since your legions of posts in this phorum show you to be a scientifically ignorant windbag - then maybe STFU.

Apr 07, 2019
@SkyLight.

Why did you have to 'twist' what I said/conjectured, mate? I based my conjecture on HISTORY of SERENDIPITOUS discovery while looking for 'something else'. Are you denying that history? If not, then my conjecture is valid based on history of scientific etc discovery. So your 'emotional' over-reaction is out of order, mate. Please try to stay calm and dispassionate at all times when involving science/logics; else you are not following/doing science/logics method/discourse objectively. Re what I think they found?...I already told you; we'll have to wait and see; because I for one don't get all emotional and make all sorts of uninformed 'guesses' about things which have not yet been announced by EHT collaboration. I Merely pointed out the chances (based on serendipity/history) that the foreshadowed 'ground breaking' discovery MAY NOT be the EH as hoped, but something else previously unsuspected/unseen. Ok? Now stop insulting me just because I commented. Thanks. :)

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