Usually the supermassive black holes are something that can be ignored. Many of the interstellar monsters are very tranquil. For example, the supermassive black hole “Sagittarius A*” located in the center of our galaxy. It is usually very quiet and dim, with little fluctuation in brightness. It is not an active core or nucleus, scattering light and heat into the surrounding space. Astronomers have discovered many galactic nuclei around the universe. Albeit being four million times larger than the Sun, Sagittarius A* is a placid. Astronomers have recently seen that the Sagittarius A exuded bright flare and is brighter than ever seen. Sagittarius A* is not sufficient to brighten in most electromagnetic spectrum but it is a bright X-ray radio source because of the heating in the accretion disk of black hole.
The astronomers saw it growing 75 times brighter before getting back to normal which is the most shining light ever seen of the supermassive black hole in near-infrared wavelengths. According to astronomer Tuan Do of the University of California, Los Angeles (UCLA) said ScienceAlert that at first, he was pretty surprised, but later he was very excited. Mr. Do also mistook it for star S0-2, since he never saw Sagittarius A* that bright. Earlier this year, Mr. Do and his team used WM Keck Observatory in Hawaii to observe the galactic center for more than four nights. On May 13, the bright flare was observed. The UCLA team managed to capture the bright flash in a time-lapse condensing down to few seconds. According to Mr. Do, Sagittarius A* may be more colorful before they started to observe. No one was aware that anything was close enough to be swallowed up by a black hole. The ULCA team is quite busy in gathering data and explain it.
There are mainly two possibilities, i.e., one is G2 and other is the star S0-2. In 2014, G2 was supposed to be a gas cloud which approached within 36 light-hours of Sagittarius A*. According to this proximity, it should have torn into shreds, and some parts of it gobbled by the black hole, but nothing happened. Later the flyby was known as “cosmic fizzle.” Last year, the star S0-2 changed the way of gas flow into the black hole which increased the gas flow making it more variable and coming within 17 light-hours of the black hole, it made its closest approach. They are collecting more data across an extensive range of wavelengths.