Experts have studied Sgr A* with the tool of GRAVITY.
An international team of astronomers studied the compact radio source Sgr A* in the center of the milky Way. The researchers recorded the light flashes that are associated with the accretion disk of matter, spinning at a speed equal to 30 percent of the speed of light. This confirms that Sgr A* is indeed a supermassive black hole.
This was reported in an article published in the journal Astronomy & Astrophysics.
According to modern concepts, supermassive black holes exist in the centers of galaxies. It is believed that the radio source Sgr A*, which is removed from the Ground by about 26 thousand light years, also belongs to this class of objects.
Experts have studied Sgr A* with the tool of GRAVITY that combines the light of the near infrared (IR) range with four telescopes of the VLT complex (Chile). Astronomers have registered three bright flashes of IR radiation, which is emitted by high energy electrons. Such outbreaks are associated with “hot spots” of gas moving at relativistic speeds in the inner part of the accretion disk.
“Hot spots” can be formed as a result of Pertamina’s magnetic field lines, resulting in magnetic energy is spent on acceleration of charged particles. Electrons become relativistic, that is, acquire a speed close to the speed of light.
Observations of Sgr A* showed that the region in which the acceleration of the particle moving around the black hole clockwise near the innermost stable circular orbit is the least circular orbit, which may be a particle, a little perturbing external field. They are removed from the event horizon of 6-10 radii of the black hole, whose mass is equal to the mass of four million Suns.
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