What we can call extremely powerful ‘cosmic engines’ black holesIt is one of the most mysterious cosmic objects that people are most curious about. These extremely powerful structures provide the energy behind quasars and other active galactic nuclei (AGNs) due to matter’s interaction with its strong gravity and magnetic fields.

Technically, black holes do not have their own magnetic field, while the surrounding black hole of dense plasma It is known to have a magnetic field. This plasma, which revolves around the black hole, creates an electric current and a magnetic field thanks to the charged particles in it. The fact that the direction of the plasma current does not change on its own means that the magnetic field is extreme stable means it is. But according to the latest information discovered, astronomers able to reverse the magnetic field It seems that he has found evidence for the existence of a supermassive black hole.

Astronomers notice that a galaxy hundreds of millions of light-years away suddenly ‘shines’

Recently, the world of astronomers has been dealing with evidence pointing to the existence of a black hole that reverses its magnetic field. shock has suffered.

Basically you can think of a magnetic field like the magnetic field in a simple magnet with a north and a south pole. A magnetic reversal can be defined as a reversal of the direction of this imaginary pole and a change of direction of the magnetic field. This effect is quite common in stars. For example, the sun, the main star of the solar system of which our planet is a part, changes its magnetic field. every 11 years turns it around. even the world every few hundred thousand years undergoes magnetic reversal.

However, this is not the case for supermassive black holes. unlikely was thought. At least until now. In 2018, an automated survey of the sky took place in a galaxy 239 million light-years away. a sudden change Has detected. The galaxy, known as 1ES 1927+654, appears larger in visible light than before. 100 times was brighter. Shortly after its discovery, the Swift Observatory captured the light of the galaxy using X-rays and ultraviolet. Archival observations of the region show that the galaxy is actually by the end of 2017 revealed that he was beginning to become enlightened.

First evidence to show that black holes can reverse their magnetic field

The cause of this flash was the supermassive black hole of the galaxy at the time. a passing star thought to be. In theory, such a close encounter should shatter the star and cause a tidal disturbance that would disrupt the flow of gas in the black hole’s accretion disk. However, the new study finds that the situation is much more than that. different show that it can happen.

The research team studied observations of galactic flare across the spectrum of light, from radio to X-rays. One of the things that caught the team’s attention during this review was the intensity of the X-rays. very quick fell. Considering that X-rays are usually produced by charged particles spiraling in intense magnetic fields, these are stunning magnetic fields around the black hole.a sudden change it may have happened.

However, the team also found that the intensity of visible and ultraviolet light in the galaxy increases observed. This means that fragments of the black hole’s accretion disk continue you are warming up shows; however, none of the effects we have mentioned are those expected to be experienced as a result of a tidal interruption, as predicted.

Judging by the available data, astronomers magnetic reversal theory He thinks it is much more appropriate for this situation. According to the team’s statements on the subject, in the event of a reversal in the magnetic field of a black hole accretion disk, the field will first appear at the outer edges of the accretion disk. damping has to happen. This allows the disc to heat up more efficiently. In addition, a weaker magnetic field is driven by charged particles. fewer X-rays are produced resources. After the reversal of the magnetic field is completed, the disk returns to its original state.

This evidence suggests that a galactic black hole may be magnetically reversible. first sightings stands out as. Although it is now known that this is possible, it is not yet known how often it occurs. To find out how many times a galaxy’s black hole can reverse its magnetic field, researchers much more detailed observations says it must be done.