Astronomer's map reveals location of mysterious fast-moving gas

December 4, 2017, University of Western Australia
Astronomer’s map reveals location of mysterious fast-moving gas
Credit: University of Western Australia

An Australian scientist has created the most detailed map ever of clouds of high-velocity gas in the universe around us.

The map covers the entire sky and shows curious of that are moving at a different speed to the normal rotation of the Milky Way.

It was created by astronomer Dr Tobias Westmeier, from The University of Western Australia node of the International Centre for Radio Astronomy Research, and published today in the leading journal Monthly Notices of the Royal Astronomical Society.

Dr Westmeier said the map suggests that at least 13 per cent of the sky is covered by high-velocity clouds.

"These are moving towards or away from us at speeds of up to a few hundred kilometres per second," he said. "They are clearly separate objects."

The map was compiled by taking a picture of the sky and masking out gas that is moving at the same pace as the Milky Way to show the location of gas travelling at a different speed.

The result is the most sensitive and highest resolution all-sky map of high-velocity clouds ever created.

It shows the gas in spectacular detail, revealing never before seen filaments, branches and clumps within the clouds.

"Starting to see all that structure within these high-velocity clouds is very exciting," Dr Westmeier said.

"It's something that wasn't really visible in the past, and it could provide new clues about the origin of these clouds and the physical conditions within them."

The research used data from the HI4PI survey, a study of the entire sky released late last year. The survey combines observations from CSIRO's Parkes Observatory in Australia and the Effelsberg 100m Radio Telescope operated by the Max-Planck Institute for Radio Astronomy in Germany.

Dr Westmeier said astronomers had proposed several hypotheses about where high-velocity clouds come from.

"We know for certain the origin of one of the long trails of gas, known as the Magellanic Stream, because it seems to be connected to the Large and Small Magellanic Clouds," he said.

"But all the rest, the origin is unknown."

Until about a decade ago, even the distances to high-velocity clouds had been a mystery, Dr Westmeier said.

"We now know that the clouds are very close to the Milky Way, within about 30,000 light years of the disc," he said.

"That means it's likely to either be gas that is falling into the Milky Way or outflows from the Milky Way itself.

"For example, if there is star formation or a supernova explosion it could push gas high above the disc."

The map will be freely available to astronomers around the world, helping us to learn more about high-velocity clouds and the local universe.

Explore further: Astronomers create most detailed radio image of nearby dwarf galaxy

More information: Tobias Westmeier. A new all-sky map of Galactic high-velocity clouds from the 21-cm HI4PI survey, Monthly Notices of the Royal Astronomical Society (2017). DOI: 10.1093/mnras/stx2757 , s3-ap-southeast-2.amazonaws.co … estmeier_hvc-sky.pdf

HI4PI: a full-sky H i survey based on EBHIS and GASS, Astronomy & Astrophysics (2016). DOI: 10.1051/0004-6361/201629178 , arxiv.org/abs/1610.06175

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cantdrive85
1.5 / 5 (8) Dec 04, 2017
This is another confirmation of Anthony Peratt's galaxy formation models based on interacting plasmoids as the presence of the HI streams are a direct prediction of these models.
https://www.plasm...ormation
Chris_Reeve
Dec 04, 2017
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434a
4.4 / 5 (7) Dec 04, 2017
These behaviors are not anomalous for laboratory plasmas. Hub-and-spoke skeletal networks are routinely recorded in tokamaks by VA Rantsev-Kartinov.

If you are seeing a network of filaments in space ("filaments, branches and clumps"), a rational approach would be to ask if the cosmic plasmas are behaving as the laboratory plasmas. We know from such laboratory observations that this is what happens when plasmas are conducting electrical currents.

Why else would the filaments "branch"?


"The map covers the entire sky and shows curious clouds of neutral hydrogen gas that are moving at a different speed to the normal rotation of the Milky Way."

Why would you expect neutral hydrogen to behave like a plasma?
Chris_Reeve
Dec 04, 2017
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Chris_Reeve
Dec 04, 2017
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434a
4.3 / 5 (6) Dec 04, 2017
Re: "Why would you expect neutral hydrogen to behave like a plasma?"

https://books.goo...;f=false

NASA's Cosmicopia
Ask Us: Cosmic Rays, Energetic Particles, and Plasma

"How was it determined that 99% of the Universe is in a plasma state?

Most of the gas in interstellar space is ionized (astronomers can tell by the wavelengths of light the gas absorbs and emits), and all of the gas in stars [is] ionized, that's where the 99% comes from. The 99% ignores any dark matter which might be out there."


Why's that relevant, the article says the gas is neutral hydrogen i.e. not ionised, therefore not a plasma.
Even if the universe is 99% plasma, this is not, this is part of the 1%.
Chris_Reeve
Dec 04, 2017
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Chris_Reeve
Dec 04, 2017
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434a
4.5 / 5 (8) Dec 04, 2017
Great, marklund currents did it, and where are they now? I mean, you're saying that the whole system neutralised itself and we are only seeing the neutral species left?
Chris_Reeve
Dec 04, 2017
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Chris_Reeve
Dec 04, 2017
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Chris_Reeve
Dec 04, 2017
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Chris_Reeve
Dec 04, 2017
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Chris_Reeve
Dec 04, 2017
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TrollBane
3 / 5 (2) Dec 04, 2017
Is this fast moving gas coming from the general direction of the Burrito Cluster?
Chris_Reeve
Dec 04, 2017
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Captain Stumpy
4 / 5 (4) Dec 04, 2017
@idiot illiterate pseudoscience eu cult acolyte
If astrophysicists want to understand WHY does this sort of thing happen, they could study the phenomenon in the laboratory.
funny thing: when I searched Google scholar I found no less than 57K results on how they can determine the charge of the cloud of H in interstellar space

(not google, or some other random internet search engine, but Google scholar limiting the results to published science papers)

and in every single paper I opened in the last 2 hours of searching, every single one references, uses and validated laboratory experimentation from plasma physics labs

the one thing I did not see was: electric universe bullsh*t

why?

because they don't do science - they just make claims about science based on ignorance

IOW - directly refuting your claims, Dr. Westmeier and every Astrophysicist that I read about got their info from lab experiments

epic fail for the idiot eu cult
Chris_Reeve
Dec 05, 2017
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Chris_Reeve
Dec 05, 2017
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Chris_Reeve
Dec 05, 2017
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Chris_Reeve
Dec 05, 2017
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Chris_Reeve
Dec 05, 2017
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mackita
1 / 5 (3) Dec 05, 2017
These gas clouds are moving towards or away from us at speeds of up to a few hundred kilometres per second
We got indicia of this gas a way before and it could be link to dark matter and undergoing climatic, geovolcanic and geomagnetic changes at the Earth and another bodies of solar system.
mackita
1 / 5 (3) Dec 05, 2017
Just a few links: 1,2..3, 4, 5..6,7..8, 9..10, 11...
Chris_Reeve
Dec 05, 2017
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Da Schneib
4.2 / 5 (5) Dec 05, 2017
Everything is apparently evidence for EUdiocy and so-called "plasma cosmology," including stuff that doesn't have an electric charge and isn't plasma. According to the EUdiots anyway.
Chris_Reeve
Dec 05, 2017
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Chris_Reeve
Dec 06, 2017
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