Photo: Jim West / imagebroker.com / Globallookpress.com
Astronomers at the Jagiellonian University in Krakow (Poland) found rhythmic oscillations in the gamma-ray blazar Markarian 501 (Mrk 501), which was removed from the Earth at 456 million light years. The exact cause of this phenomenon is still unknown. About it reported in a press release on Phys.org.
Blazey represent active galactic nuclei with relativistic jets (jets) pointing towards the observer. Thus, they represent a variety of quasars, all of which have a Central supermassive black hole. Markarian 501 refers to lacertids — powerful sources of electromagnetic radiation which emit radiation in all ranges of the spectrum.
The researchers analyzed data obtained during observation of Mrk 501 with the space Observatory Fermi Gamma-ray Space Telescope in the period August 2008 to June 2018. They found a distinct quasi-periodic oscillations recurring approximately every 332 days. However, changes in the intensity of gamma rays weakened in recent years.
Probable causes of the phenomenon researchers call the presence in blazare double supermassive black hole; the angular momentum, which resulted in the jets change their direction; the precession of the accretion disk under the influence of torque.
Video, photo All from Russia.