After few years f broad research, scientists have now found some new facts about galaxies. A researcher’s team from Columbia University has stated there are thousands of smaller black holes around the supermassive black holes situated in the center of galaxies. The new study which was published in the journal Nature has informed that there are around 13 black holes near a supermassive black hole named Sagittarius A (Sgr A), in our Milky Way galaxy.
The researchers used data taken by Chandra X-ray Observatory of NASA to discover those tiny black holes which are in distance of three light years of Sgr A. Stating more about it, Chuck Hailey, an astrophysicist at Columbia University stated “There are around five dozen known black holes in the entire galaxy. It is now expected that there must be around 10,000 to 20,000 isolated black holes in an area of six light-years wide which has not been discovered yet.
Generally, space dust and thick clouds have made it quite difficult to see what is there in the center of our Milky Way galaxy. But, analyzing strong radio waves, infrared light coming from that galaxy and X-ray picture scientists have managed to observe the event. Recently, scientists observed the X-ray sources erupted near Milky Way’s Sagittarius A. During the study, the team detected around 100 different X-ray sources coming from nearly 13 light-years of the supermassive black hole and from them around 26 X-rays sources are discovered within just 3 light years.
Hailey informed that the Sagittarius A is covered by a thick layer of gas and dust and that is one of the major locations where the massive star can form. However, when those giant stars conk out, they gradually become black holes. Based on this fact it can now say that there must be a number of small black holes around the galactic center. X-rays can be erupted from neutron stars, black hole and from pulsars. Normally, neutron stars generate regular X-rays burst but Chandra X-rays observatory didn’t find such X-rays. So, that suggests the X-rays were coming from the black holes in Milky Way.
In future, using the advanced and powerful telescopes, scientists can study more on X-rays and its sources which is Sagittarius A. That will help them to understand the evolution of black holes and about gravitational waves. Hailey informed that if they can get the number of black holes that are there in the core of galaxies, they can predict gravitational wave events linked with them.