Magnetic field traces gas and dust swirling around supermassive black hole

Magnetic field traces gas and dust swirling around supermassive black hole
The colour scale in the image shows the amount of infrared (heat) radiation coming from warm dust particles in the filaments and luminous stars within a light year of the Galactic centre. The position of the black hole is indicated by an asterisk. The lines trace the magnetic field directions and reveal the complex interactions between the stars and the dusty filaments, and the impact that they and the gravitational force has on them. The observations were made with the largest telescope in Europe, which allowed details of the fine structure in the magnetic fields to be revealed for the first time. Credit: E. Lopez-Rodriguez / NASA Ames / University of Texas at San Antonio

Astronomers reveal a new high resolution map of the magnetic field lines in gas and dust swirling around the supermassive black hole at the centre of our Galaxy, published in a new paper in Monthly Notices of the Royal Astronomical Society. The team, led by Professor Pat Roche of the University of Oxford, created the map, which is the first of its kind, using the CanariCam infrared camera attached to the Gran Telescopio Canarias sited on the island of La Palma.

Black holes are objects with gravitational fields so strong that not even can escape their grasp. The centre of almost every galaxy appears to host a black hole, and the one we live in, the Milky Way, is no exception. Stars move around the black hole at speeds of up to 30 million kilometres an hour, indicating that it has a mass of more than a million times our Sun.

Visible light from sources in the centre of the Milky Way is blocked by clouds of gas and dust. Infrared light, as well as X-rays and radio waves, passes through this obscuring material, so astronomers use this to see the region more clearly. CanariCam combines infrared imaging with a polarising device, which preferentially filters light with the particular characteristics associated with magnetic fields.

The new map covers a region about one light year on each side of the . The map shows the intensity of , and traces lines within filaments of warm dust grains and hot gas, which appear as thin lines reminiscent of brush strokes in a painting.

The filaments, several light years long, appear to meet close to the black hole (at a point below centre in the map), and may indicate where orbits of streams of gas and dust converge. One prominent feature links some of the brightest stars in the centre of the Galaxy. Despite the strong winds flowing from these stars, the filaments remain in place, bound by the magnetic field within them. Elsewhere the magnetic field is less clearly aligned with the filaments. Depending on how the material flows, some of it may eventually be captured and engulfed by the black hole.

The new observations give astronomers more detailed information on the relationship between the bright stars and the dusty filaments. The origin of the magnetic field in this region is not understood, but it is likely that a smaller magnetic field is stretched out as the filaments are elongated by the gravitational influence of the black hole and stars in the galactic centre.

Roche praises the new technique and the result: "Big telescopes like GTC, and instruments like CanariCam, deliver real results. We're now able to watch material race around a black hole 25,000 light years away, and for the first time see magnetic fields there in detail."

The team are using CanariCam to probe magnetic fields in dusty regions in our galaxy. They hope to obtain further observations of the Galactic Centre to investigate the larger scale magnetic and how it links to the clouds of gas and dust orbiting the black hole further out at distances of several light years.


Explore further

New research challenges existing models of black holes

More information: P F Roche et al, The Magnetic Field in the central parsec of the Galaxy, Monthly Notices of the Royal Astronomical Society (2018). DOI: 10.1093/mnras/sty129
Citation: Magnetic field traces gas and dust swirling around supermassive black hole (2018, February 21) retrieved 23 September 2019 from https://phys.org/news/2018-02-magnetic-field-gas-swirling-supermassive.html
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Feb 22, 2018
the one we live in, the Milky Way, is no exception. Stars move around the black hole at speeds of up to 30 million kilometres an hour, indicating that it has a mass of more than a million times our Sun.

Pure conjecture, based on maths fantasy and little else.
The origin of the magnetic field in this region is not understood

That's funny, the plasma ignoramuses never seem to understand how magnetic fields are created in plasmas. Try electric currents!
but it is likely that a smaller magnetic field is stretched out as the filaments are elongated by the gravitational influence of the black hole and stars in the galactic centre.

LOL, and once again pseudoscientific and maths equations concepts are used in ways that are anti-science.

Feb 23, 2018
The mini-spiral and helical electric currents are just what one should expect to see in an Electric Universe.

Feb 23, 2018
Pure conjecture, based on maths fantasy and little else.


Wrong. Based on observations over more than a decade.

The mini-spiral and helical electric currents are just what one should expect to see in an Electric Universe.


Really? More post-diction, methinks. Show me where they wrote this up. In detail. And what currents? The evidence for them is......? Given that the EU cult never get anything right, this is summarily dismissed, along with the rest of their mythology based pseudoscience. Unless and until they start doing real science, then they remain an irrelevance.


Feb 23, 2018
The predicted helical field per the model, with an accurate galactic rotation curve. No black hole monsters or faerie dust required.
https://www.thund...ce-news/

Feb 23, 2018
Based on observations over more than a decade.

I am not questioning the motion of the stars, even the plasma ignoramuses can get that right. The interpretation of the quadrillion kilo monster is pure conjecture, and that is a fact.

Feb 23, 2018
And what currents? The evidence for them is......?

Those helical twisting and turning magnetic fields, they are absolutely impossible without an electric current.

Feb 23, 2018
Based on observations over more than a decade.

I am not questioning the motion of the stars, even the plasma ignoramuses can get that right. The interpretation of the quadrillion kilo monster is pure conjecture, and that is a fact.


Nope, wrong again. It is a relatively easy calculation to estimate the mass of the object being orbited from the orbital parameters of the orbiting object. Unless EU want to throw out Kepler and Newton to force ft their unevidenced rubbish into real science.

Feb 23, 2018
And what currents? The evidence for them is......?

Those helical twisting and turning magnetic fields, they are absolutely impossible without an electric current.


Really? Where does it say that in the paper? Just read it, can't see anything. And I wouldn't take seriously anything proposed by Don Scott re astrophysics.

Feb 23, 2018
Unless EU want to throw out Kepler and Newton

Hey jackass, you do understand you are missing 96% of your Universe by only relying on Kepler and Newton. But who cares about facts?
Really? Where does it say that in the paper? Just read it, can't see anything.

I don't take anything seriously that was produced by plasma ignoramuses. All you need to do is ignore the paper and refer to Maxwell's equations almost 200-years-ago.

Feb 23, 2018
^^^^No dark matter is needed to explain Kepler's third law, dummy. And Scott is horribly ignorant on plasma and astrophysics. Ask him what happens to an invisible incoming current, and its associated magnetic field, when it meets an outflowing bunch of electrons and ions, and their magnetic field. Get him to draw a picture of this. How does it match observation? Sorry, but Scott is a nobody, who has never published anything of note.

Feb 23, 2018
No dark matter is needed to explain Kepler's third law,

Zing, you got me...Although I never said such a thing. However, one salient fact is that including Newton, Kepler, Einstein's BS, and every other "law", rule, equation, belief, all of it, the standard theory is still missing 96% of the Universe. If I produced a similar 4% success rate that the plasma ignoramuses do I would be living under a bridge somewhere. Ironically, the plasma ignoramuses keep getting billions of dollars shoveled their way. What a pathetic display!

Feb 23, 2018
An explanation about why and how the electric currents that drive plasma processes must be explicitly considered.
https://www.ann-g...65/2017/
My favorite part, he says;
"Magnetic reconnection is not necessary."
LOL!

Feb 23, 2018
An explanation about why and how the electric currents that drive plasma processes must be explicitly considered.
https://www.ann-g...65/2017/
My favorite part, he says;
"Magnetic reconnection is not necessary."
LOL!


Akasofu. Say no more. He is in a minority of one, and is somewhat "dated".

Feb 23, 2018
No dark matter is needed to explain Kepler's third law,

Zing, you got me...Although I never said such a thing. However, one salient fact is that including Newton, Kepler, Einstein's BS, and every other "law", rule, equation, belief, all of it, the standard theory is still missing 96% of the Universe. If I produced a similar 4% success rate that the plasma ignoramuses do I would be living under a bridge somewhere. Ironically, the plasma ignoramuses keep getting billions of dollars shoveled their way. What a pathetic display!


And the plasma geniuses, whoever they are, have absolutely no idea, otherwise they'd be trumpeting it from the rooftops, and would have a Nobel to boot. Tell me; who are these mysterious few that understand plasma? Don't seem to hear anything from them.

Feb 23, 2018
Akasofu. Say no more. He is in a minority of one, and is somewhat "dated".

Once again, attack the individual and avoid commenting on the science you can't grasp. Here is a gentleman who has work directly with both Chapman (head plasma ignoramus for decades) and Alfvén (the "Father of plasma physics") and you disregard him off-handed because he isn't a proper acolyte and you claim he is "dated". You are far, far, far more irrelevant than this Professor Emeritus.
https://sites.goo...akasofu/

Feb 23, 2018
Akasofu. Say no more. He is in a minority of one, and is somewhat "dated".

Once again, attack the individual and avoid commenting on the science you can't grasp. Here is a gentleman who has work directly with both Chapman (head plasma ignoramus for decades) and Alfvén (the "Father of plasma physics") and you disregard him off-handed because he isn't a proper acolyte and you claim he is "dated". You are far, far, far more irrelevant than this Professor Emeritus.
https://sites.goo...akasofu/


Not my view. Here is the view of a plasma astrophysicist who worked in Alfven's lab, and isn't as dated:
http://www.intern...ount=214

And here is another telling him that he's wrong:
http://www.kwasan...9a2s.pdf

Feb 23, 2018
Not my view.

Not at all surprising, have you ever had an original thought in your brain cell?

Feb 23, 2018
Not my view.

Not at all surprising, have you ever had an original thought in your brain cell?


What, like the Sun being powered by invisible currents? Or comets being rockless rocks with invisible electric currents making invisible electric discharges? That sort of thing, you mean? No, thankfully not. And if I do, I hope they take me away in a special jacket.

Feb 23, 2018
And here is another telling him that he's wrong

You do understand if they are going to rely on plasmoids to explain the explosions were back to discussing circuits, double layers, and all those things that requires electric currents to be the impetus for all said phenomena. LOL!

Feb 23, 2018
And here is another telling him that he's wrong

You do understand if they are going to rely on plasmoids to explain the explosions were back to discussing circuits, double layers, and all those things that requires electric currents to be the impetus for all said phenomena. LOL!


Really? Where do they say that?

Feb 23, 2018
They don't, because they are plasma ignoramuses. Akasofu explains in the first few paragraphs of his paper the deficiency of the plasma ignoramuses to include descriptions of the power supply, transmission, as well as the dissipation. You know, physics instead of the pseudoscientific claptrap of the plasma ignoramuses.

Feb 23, 2018
They don't, because they are plasma ignoramuses. Akasofu explains in the first few paragraphs of his paper the deficiency of the plasma ignoramuses to include descriptions of the power supply, transmission, as well as the dissipation. You know, physics instead of the pseudoscientific claptrap of the plasma ignoramuses.


The same Akasofu who other plasma physicists have said is past his sell by date?
Sorry, when it comes to reconnection I'll take the word of a former Principal Investigator of the Cluster mission, who has seen the in-situ data for himself, before that of Akasofu. And I think we both know who that is.

Feb 23, 2018
Have you ever, in your pathetic existence, ever had a legitimate argument that didn't involve a logical fallacy? You've got about as many on display here as you have posts.

Feb 23, 2018
Have you ever, in your pathetic existence, ever had a legitimate argument that didn't involve a logical fallacy? You've got about as many on display here as you have posts.


What are you on about, woo boy?

Feb 23, 2018
Sorry, when it comes to reconnection I'll take the word of a former Principal Investigator of the Cluster mission

You are right, you should absolutely rely on the plasma ignoramus when it comes to the pseudoscientific claptrap of MRx. When it comes to real plasma physics I'll rely on the scientists who don't revert to pseudoscientific claptrap for an explanation. Akasofu was a protege of both lines of study Alfvén mentioned in his Nobel Lecture, the maths based approach of Sydney Chapman (who was shown to be wrong by direct measurement) and Alfvén's experimental approach (most of which is completely accurate). He is uniquely equipped to resolve these issues.
The same Akasofu who other plasma physicists have said is past his sell by date?

What is the expiration date of a scientist? 40-years-old? 50? 60? 80? Sounds like your glory hole partner from the Cluster mission relies on the same ad hominem logical fallacy M.O. you rely upon.

Feb 23, 2018
Strangely enough, I do not see any "gravity wells" or "curved spacetime" in the data of these magnetic fields...

Feb 23, 2018
You are right, you should absolutely rely on the plasma ignoramus when it comes to the pseudoscientific claptrap of MRx.


Whoa, that's you persona non grata with the Cult! Said P.I. was Carl-Gunne Falthammar! Who most definitely does accept MRx. As I've pointed out to you numerous times. Whoops. Not very keen on poor old C-G, are you?


Feb 23, 2018
Strangely enough, I do not see any "gravity wells" or "curved spacetime" in the data of these magnetic fields...


Why would there be?

Feb 23, 2018
What is the expiration date of a scientist? 40-years-old? 50? 60? 80? Sounds like your glory hole partner from the Cluster mission relies on the same ad hominem logical fallacy M.O. you rely upon.


Ohhhhh boy! I missed that bit! Poor old Carl-Gunne, the way you cultists talk about him! Shame, shame, shame!


Feb 23, 2018
Poor old Carl-Gunne,

You said it, obviously he's past his sell by date. And being that you constantly lie through you teeth, I would like to see where Falthammar said that about Akasofu being they collaborated several times.

Feb 23, 2018
Poor old Carl-Gunne,

You said it, obviously he's past his sell by date. And being that you constantly lie through you teeth, I would like to see where Falthammar said that about Akasofu being they collaborated several times.


He didn't. You did. I said (for the hard of remembering) that I would take the word of a P.I. on the Cluster instrument team, over Akasofu. Falthammar was that P.I. You then proceeded to call him all sorts of terrible things. Falthammar was open to MRx at least as early as 1979. Akasofu has been firmly mired in the past for a very long time. In fact, I don't think he ever left it.

Feb 24, 2018
Well Falthammar is definitely past his expiration date, as of 1979 if he really is open to pseudoscientific claptrap. It's called electromagnetism, not just magnetism. One cannot resolve electromagnetic phenomena by accounting for only the magnetic properties. BTW, Falthammar saw first hand how Alfvén was treated and ignored by the scientific community due to his maverick personality. Falthammar sacrificed his dignity for his career knowing he would never have an opportunity to be a PI, for example, if he continued on like Alfvén did. Even then Falthammar still pointed out that numerous plasma ignoramuses were treating MRx using pseudoscientific concepts of moving and breaking field lines.
The biggest irony is that MRx is based on the MHD approach of treating plasmas, that which Alfvén was awarded his Nobel and used his Nobel Lecture to tell all how they were wrong to continue to use it. The plasma ignoramuses are mirered in the past while the nuclear physicists have moved on.

Feb 24, 2018
^^^^^^ Utter crap. Falthammar was working with Mozer, who has written much on MRx, whilst still co-authoring with Alfven! Are you telling me that they never talked to each other? Rubbish. It is probably why Alfven had written that 'magnetic merging' was 'possible', as early as 1976. Alfven was essentially gone from plasma physics by the mid-80s. He developed an obsession about his cosmology, and also about the rings of Saturn.
And your understanding of MHD is, as per usual, flawed. Yes, anybody using ideal MHD to model MRx is in trouble. Alfven & Falthammar knew this, as did plenty others. Other types of MHD were developed, including resistive MHD and Hall MHD. They all knew that the frozen-in concept had to be violated, and they had a mechanism by then. And Falthammar gave Alfven credit for it; field aligned electric fields, which can cut magnetic field lines! Alfven dropped off the scene, essentially, and Falthammar saw the data with his own eyes. Hence the difference.

Feb 25, 2018
And your understanding of MHD is, as per usual, flawed.

And jonesdumb is caught in another lie...
https://www.ncbi....5247523/
Note, paper is from 2017.
It's caulk full of all the typical pseudoscientific claptrap, MHD, frozen-in fields, breaking and reconnecting field lines and it goes on.
Other types of MHD were developed, including resistive MHD and Hall MHD

MHD is MHD is MHD. It's all useless in describing the phenomena.

Feb 25, 2018
It is probably why Alfven had written that 'magnetic merging' was 'possible', as early as 1976.

Context for what Alfven was saying;
From 'Cosmic Plasma',
II.5.3 `MAGNETIC MERGING' THEORIES
What we have found means that we can describe plasma phenomena inside a finite volume only if no electric current crosses the surface . In the terminology of the magnetic field description, this means that we can describe plasma phenomena inside a finite volume only if the perpendicular component of the curl is zero at every point of the surface. All theories of `magnetic merging' (or `field line reconnection') which do not satisfy
this criterion are misleading or erroneous, and deserve no attention . This does not mean that all papers in which `magnetic merging' is used are of no interest, because there exist some good papers (e .g., Hill, 1975) in which the term is merely a synonym for "current sheet acceleration."

Still, no "frozen-in" condition, nor moving or breaking field lines.

Feb 25, 2018
And your understanding of MHD is, as per usual, flawed.

And jonesdumb is caught in another lie...
https://www.ncbi....5247523/
Note, paper is from 2017.
It's caulk full of all the typical pseudoscientific claptrap, MHD, frozen-in fields, breaking and reconnecting field lines and it goes on.
Other types of MHD were developed, including resistive MHD and Hall MHD

MHD is MHD is MHD. It's all useless in describing the phenomena.


Wrong. You are just too ignorant to realise why.

Feb 25, 2018
Wrong. You are just too ignorant to realise why.

The opposite is true that you are too ignorant to explain to me why. I will tell you those MHD models cannot derive the circuit elements that are required to explain the phenomena.

Feb 25, 2018
Wrong. You are just too ignorant to realise why.

The opposite is true that you are too ignorant to explain to me why. I will tell you those MHD models cannot derive the circuit elements that are required to explain the phenomena.


Wrong. And read Alfven's passage again. And then this one:

In case the magnetic field varies with time, the geometry near neutral points may change in such a way that it is legitimate to speak of a 'field-line reconnection' We cannot exclude the possibility that some of the field-line reconnection formalism may be applicable, but this ***remains to be proved***.


And has been.

On Frozen-In Field Lines and Field-Line Reconnection
Alfven, H.
http://onlinelibr...019/full (paywalled)

t b cont....................

Feb 25, 2018
And then we have Falthammar giving praise to Alfven for making MRx possible!!!!

The nonexistence of parallel electric fields was later challenged by Alfven, who suggested that auroral primary electrons may gain their energy from falling through a parallel potential drop above the ionosphere and described how parallel electric fields can 'cut' magnetic field lines. Alfven's idea was contrary to contemporary beliefs and was almost universally disregarded, but when in situ measurements in space became possible, they brought the first indications that Alfven might be right. Since then, an overwhelming amount of empirical data have proven that magnetic field aligned electric fields exist and are of key importance in the physics of auroras, in magnetic field reconnection,.....

http://onlinelibr.../2007EO1

Feb 25, 2018
So, my take on all this is:

Cantthink doesn't understand;

a) what Alfven was saying.
b) what Falthammar was saying.
c) What the difference is between various types of MHD, and.........
d) plasma physics in general.

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