The M87 jet is helically wound out further than thought

[BeAChooser]

https://phys.org/news/2021-12-vla-revea ... alaxy.html

Astronomers using the National Science Foundation's Karl G. Jansky Very Large Array (VLA) have shown that a jet of material propelled from the core of a giant galaxy is channeled by a corkscrew-shaped magnetic field out to nearly 3,300 light-years from the galaxy's central supermassive black hole. That is much farther than such a magnetic field previously had been detected in a galactic jet.

Oh, my! As one of the investigators admits ...

"Helical magnetic fields are expected close to the black hole, and are thought to play a highly important role in channeling the material into a narrow jet, but we didn't expect to find such a strong helical field extending so far outward," said Jose M. Marti, of the University of Valencia.

So how do they explain this now ...

The magnetic field is expected to weaken with its distance from the black hole. However, the scientists suggested that instabilities in the flow of material within the jet could make the magnetic field more ordered at the distances seen in the new VLA images. The instabilities produce regions of higher pressure which also compress the magnetic field lines.

Ah ... of course ... with a gnome involving magnetic field lines ... as if they're a real thing.

Or there could be another explanation for this helically wound jet ...

From 2013 …

https://arxiv.org/pdf/1308.5429v1.pdf

By stacking images over three years in order to enhance the sensitivity, we reveal, for the first time, systematic transverse gradients of the Faraday rotation measure in several knots along the jet. Combining this result with polarization properties and the dynamics of the jet, we suggest the magnetic structure in several knots at kiloparsec scales consists of a systematically wrapped, tightly wound helical configuration. Our analysis brings us a new paradigm where the M87 jet is a fundamentally current carrying system produced in the vicinity of the supermassive black hole, transferring a huge amount of the electromagnetic energy over the host galaxy scale.

Oh ... "a current carrying system"? Does that remind you of anything, folks? And are there alternatives to a black hole creating a jet? The answer must be yes since Herbig Haro objects, known at jet stars, emit helically wound jets and they are known not to be black holes. Indeed, plasma cosmologists have a whole different idea about what drives them. One the mainstream won't consider.

[BeAChooser]

https://www.msn.com/en-gb/news/techands ... ar-AARGt1H

"Helical magnetic fields are expected close to the black hole, and are thought to play a highly important role in channeling the material into a narrow jet," Jose M. Marti, co-author of the study and an astronomer at the University of Valencia in Spain, said in the statement. "But we didn't expect to find such a strong helical field extending so far outward." 

No … you certainly didn’t expect that ... because the physics you suggest is silly. But electric universe / plasma cosmologists did expect this and they have a lab proven theory for why that’s the case. In your case, you offer nothing more than another gnome to try and explain it away …

The new observations suggest that instabilities in the flow of material within the jet may create regions of higher pressure. This, in turn, could compress the magnetic field lines, causing them to be more ordered at the extreme distances seen in the M87 observations, according to the statement.

What's more, the interaction between the magnetic field and the unstable flow of material in the galactic jet is believed to cause the double-helix structure seen in the recent observations of M87. 

Just saying …