Astronomers expected in the near future of a supernova explosion in a neighboring galaxy M 83, to his surprise an outbreak of a different origin. Scientists have seen a new high-brightness X-ray source, or ULX. In the time of the outbreak, which has been identified by scientists as "unusual", the level of X-ray luminosity ULX in M 83 has nearly 3,000 times, becoming one of the most significant changes in the X-ray spectrum for space objects of this kind.
It should be noted that the observations of the galaxy M 83 were carried out with the aid of a telescope for a few years. During this time, did not show any signs or traces of ULX.
However, in 2011, scientists noticed a light blue spot, located close to the source ULX. This could indicate the presence of a black hole incredible size, which may even have been one of the largest in the entire galaxy. By all likelihood, bluish glow was the result of the energy absorption of the companion star, a red giant, whose age is about 500 million years.
Astronomers claim that a detailed study of this explosion will enable them to better understand the nature of the mysterious ULX class of black holes, producing X-rays is the amount of energy that can emit millions of suns in different ranges.