Dmitry Kuvshinov - author first on the Russian Internet, scientific news feeds - sent me news from scientific sites, under the catchy title "Cosmic shock: Astronomers are alarmed by recently discovered strange objects" .
As soon as I looked at the photo accompanying the news, my heart began to beat with the old graduate fervor. Lord, I wonder if this article of mine really turned out to be one of the sleeping beauties category.
Well, what did a group of radio astronomers from the USA and South Africa discover?
We read the news:
Here (see top photo) is the very first such object discovered. Designated ORC 1. ORC is an odd radio circle, strange radio circle. Why radio? Because the object was tracked only in the radio range, no other type of telescope it was not initially observed. Discovered by the South African radio observatory MeerKAT."
This is a serious matter and I decided to look at the source:
Ionized Gas Extended Over 40 kpc in an Odd Radio Circle
Host Galaxy, Alison L. Coil, Serena Perrotta1, David S. N.
Rupke2 ...
Yes, it is, at least of these objects it turned out to be exactly that
a phenomenon that I called the Magnetosphere of Galaxies.
What's the idea? In 1976-78. I worked at the Goloseevskaya Observatory of the Academy of Sciences of the Ukrainian SSR and
was engaged in accretion onto magnetized neutron stars,
constantly corresponding with my thesis boss, Nikolai Ivanovich Shakura.
I had a good idea of the cutting edge of this science.
And often I imagined what the magnetosphere of a neutron star looks like,
and these imaginary pictures,
I transferred it to drawings.
But to dream of seeing in space the magnetosphere of a star the size
about the size of a poppy seed, useless. And I thought about large objects - Galaxies.
After all, I studied them first with A.V. Zasov in my first years,
and then with Ya.B.Zeldovich (macro-chef) and A.G.Doroshkevich (micro-chef)
theory of pancakes - protoclusters of galaxies. For the magnetosphere to arise -
a sharp boundary between the plasma surrounding any object is needed,
so that the object has its own large-scale magnetic field.
Our Galaxy, and other spiral galaxies, have such a field.
This field protects the galaxy from being hit by hot intergalactic
plasma, just as the Earth's magnetosphere saves us from the solar wind.
Astrophysical plasma has high conductivity and magnetosphere
turn out to be quite stable cocoons inside which there is
source of magnetic field. In the case of Galaxies, an important role in the formation
The magnetosphere is played by the gravity of the galaxy itself.
The characteristic speeds of movement of galaxies do not differ much from the second cosmic speed of the Galaxy (in the case of the Earth's magnetosphere this is completely different, because the speed of the solar wind is tens of times higher than the second cosmic speed). So, I thought, the intergalactic plasma encounters the magnetic field of the Galaxy and a shock wave arises, covering the relatively thin boundary of the magnetosphere, enhancing the magnetic field by 2-3 times, and its energy by almost an order of magnitude. Obviously, galactic cosmic rays colliding with the magnetosphere begin to lose energy - synchrotron radio emission. So a radio cocoon appears around the galaxy, which radio astronomers recently discovered. Of course, an important role (and this is written about in my work) is played by supernova explosions, which form a galactic wind that carries the magnetic field over long distances. Where it, like a litmus test, highlights the relativistic particles trapped in the cocoon - cosmic rays. The galaxy that you see in the first photo undoubtedly has powerful star formation and, accordingly, it often
supernovas erupt, and the magnetosphere-cocoon swells to a distance of 40 kpc!
The article, among other things, proposes a new explanation for the curvature
gas galactic disks and the mechanism of cloud formation is proposed
neutral hydrogen falling onto the galactic plane.
Well, now look at Fig. 2. cited in a 1979 article
Let someone say that this is not like the galactic "ORCS":
Please note that the article directly predicts the existence of magnetospheres in other galaxies:
