Thousands of black holes
A team of astrophysicists has recently reveals a study on black holes in our milky way. The study explains, thousands of black holes gathered around Sagittarius A*, the supermassive black hole in the center of our Milky Way.
More than two decades ago, researchers searched unsuccessfully for evidence to support a theory that thousands of black holes surround supermassive black holes (SMBHs) at the center of large galaxies.
Columbia Astrophysicist Chuck Hailey, lead author on the study, says, there are only about five dozen known black holes in the entire galaxy, including that extensive unsuccessful search made for black holes around Sgr A*.
Black holes around Sgr A*
According to researchers, the Sgr A* surroundings covered with a halo of gas and dust that set up a stage for the birth of massive stars, which live, die and could turn into black holes there.
While most of the trapped black holes remain isolated, some capture and bind to a passing star. These isolated and mated black holes in the Galactic Center forming a density cusp which gets busier as distance to the SMBH decreases.
It’s an obvious way to search for black holes, but the Galactic Center is so far away from Earth those radio bursts are solid and bright to see about once every 100 to 1,000 years.
Binary black holes
To detect binary black holes, researchers need to look for the unclear, but steadier X-rays emitted after the initial bonding, when the binaries are in an inactive state.
Hailey and colleagues turned to archival data from the Chandra X-ray Observatory to test their technique. They searched for X-ray signatures of black hole low mass binaries in their inactive state and able to find 12 objects within three light years of Sgr A*.
At last, the scientists analyzed the properties and spatial conveyance of the identified binary systems and estimated 300 to 500 black hole low mass binaries and about 10,000 isolated black holes in the area surrounding Sgr A*. This finding affirms a noteworthy hypothesis and the suggestions to related studies.