Innermost structure of quasar jet

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Innermost structure of quasar jet

Unread post by BeAChooser » Mon Nov 28, 2022 2:11 am

Speaking of jets … ... r-jet.html
International team observes innermost structure of quasar jet ... am-obs.jpg

An international team of scientists has observed the narrowing of a quasar jet for the first time by using a network of radio telescopes across the world. The results suggest that the narrowing of the jet is independent of the activity level of the galaxy which launched it.

Nearly every galaxy hosts a supermassive black hole in its center. In some cases, enormous amounts of energy are released by gas falling towards the black hole, creating a phenomenon known as a quasar. Quasars emit narrow, collimated jets of material at nearly the speed of light. But how and where quasar jets are collimated has been a long-standing mystery.

An international team led by Hiroki Okino, a graduate student at the University of Tokyo, and including members from the National Astronomical Observatory of Japan (NAOJ), the Massachusetts Institute of Technology, Kogakuin University, Hachinohe National College of Technology, and Niigata University, captured an image with the highest angular resolution to date that shows the deepest part of the jet in a bright quasar known as 3C 273. ... -obs-1.jpg

The team found that the jet flowing from the quasar narrows down over a very long distance. This narrowing part of the jet continues incredibly far, well beyond the area where the black hole's gravity dominates. The results show that the structure of the jet is similar to jets launched from nearby galaxies with a low luminosity active nucleus. This would indicate that the collimation of the jet is independent of the activity level in the host galaxy, providing an important clue to unraveling the inner workings of jets.
Here’s what MIT had to say about this: ... r-jet-1122
Active supermassive black holes emit narrow, incredibly powerful jets of plasma that escape at nearly the speed of light. These jets have been studied over many decades, yet their formation process is still a mystery to astronomers and astrophysicists. An unresolved issue has been how and where the jets are collimated, or concentrated into a narrow beam, which allows them to extend to extreme distances beyond their host galaxy and even affect galactic evolution.
Gee … you don’t suppose there’s electric current flowing along the plasma of the jet, generating a magnetic field, which is what’s providing that collimation? After all, we know there’s a double helix structure in the jet emanating from 3C273 and that’s consistent with that hypothesis. What theory do the mainstreamers have instead? Nothing yet, so far I can see, but I’ll wager when they come up with one, it will involve a gnome or two. ;)

Here, by the way, is the study … ... 357/ac97e5

Notice that the word “plasma” occurs only once in that report, even though its use shows they recognize that the jets are “plasma outflows”. Obviously, the significance of there being plasma in them has escaped them. And notice that electromagnetism and electric are two terms that aren’t mentioned in the report at all. Obviously, the possibility that electric current and electromagnetism are somehow involved in “confining” the plasma has never even crossed their *scientific* intellects. Maybe they didn't teach that in the astrophysics classes they took to get their degrees. Wouldn't surprise me.