Scientists accidentally opened a second giant black hole in the invisible galaxy

© Bill Saxton, NRAO/AUI/NSFТак the artist presented two black holes in the center of the galaxy, Cygnus AScientists accidentally opened a second giant black hole in the invisible galaxy© Bill Saxton, NRAO/AUI/NSF

. The VLA radio telescope accidentally discovered in the galaxy, Cygnus A, the first radio galaxy in the history of astronomy, the second supermassive black hole, which was hidden from scientists for more than 20 years, according to a paper accepted for publication in the Astrophysical journal.

«The first photographs of this galaxy obtained with the VLA in 1980, became the «hallmark» of radio astronomy and its capabilities. When the telescope was refurbished in 2012, we wanted to obtain new images of this object. To our surprise, we suddenly found in the center of the galaxy the object that was absent at all the old pictures,» says Rick Perley (Rick Perley) from the National radio astronomy Observatory, USA in Socorro.

Galaxy, Cygnus A or 3C 405 is the first known to mankind «radio galaxy» giant family of stars that we cannot see in the optical range because of the large distance between them and the Milky Way, but can be seen by their powerful radio emission. For example, Swan And every second produces about as much energy as he could to allocate 260 billion Suns.

The source of this radiation, as shown by observations of Cygnus A in the late 1970s, are heavy duty quasars – active black holes in the centers of galaxies, releasing part of the «chewed-up» of matter in the intergalactic medium in the form of thin beams of superhot matter accelerated to near-light speeds. These bundles, so called jets, shining brightly in the radio, and they can be easily seen on images of galaxies at the bright and long «tails.»

This discovery has interested scientists, and they followed a mysterious structure in the Swan And with the help of other telescopes, able to see this galaxy in other parts of the electromagnetic spectrum. These observations confirmed that the «unidentified object» really exists, and narrowed the list of possible variants of its origin to two things: flash and remains a powerful supernova or another supermassive black hole, «woken up» recently and started to eat surrounding gas and dust.

As scholars have noted, it’s hard to say which of these options is closer to the truth – the strength of the glow object Swan A2 and its spectral characteristics in principle fall under the values permitted for supernovae, and black holes, began to absorb the matter.

In General, however, the team Purley leaning toward a black hole, as sne with such force, generating a powerful and long gamma-ray bursts and beams of radio waves, are extremely rare. Further observations of 3C 405, as scientists hope, will help to understand whether this is so or not.

If Swan A2 really is a black hole, then scientists will have the unique opportunity to follow the «awakening» of the quasar and to understand how periods of activity and hibernation affect the evolution of galaxies, and how the emergence of a second supermassive black hole can affect the behavior of such space «heavyweights».

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