The mystery of black hole is now taking a new turning point. Scientists at NCRA have discovered the most interesting binary Blackhole ever, situated around 400 million light years away from the Earth. The blackhole is located in NGC 7674 (Markarian 533); a gas-enriched interacting spiral galaxy within the constellation Pegasus.
These two black holes are separated by the distance of one light year only. According to the Professor David Merritt, from Rochester Institute of Technology, the distances between the black hole is the smallest distance detected with direct imaging.
The combined mass of these two black holes is estimated around 40 million tomes of the mass of the Sun and orbital period is near 1,00,000 years. Earlier in 2015, the clash of the astronomical mass blackholes had driven to the milestone discovery of gravitational waves, which accomplished with the help of LIGO (Laser Interferometer Gravitational-wave Observatory).
Two Indian scientists Preeti Kharb and Dharam Vir Lal at the National Centre for Radio Astrophysics (NCRA), Tata Institute of Fundamental Research, are involved in the discovery of this binary black hole along with David Merritt.
Kharb and Lal stated, “The discovery is significant because of the existence of black holes inside galaxies, which are potential sources of gravitational waves.”
In the comparison of the frequency of gravitational waves, supermassive binary results in very lower frequency than stellar-mass binaries, This is the reason LIGO cannot detect its signal. So, Professor Merritt along with his team decided to use radio telescopes available around the world and make them all work as a single bigger telescope to achieve the resolution nearby 10 million times the angular resolution of the human eye.