Scientists used ESA’s XMM-Newton and NASA’s Chandra X-ray Observatories as well as the Swift X-ray Telescope to find evidence for the existence of a rare type of black hole, an intermediate-mass black hole!!
Wolf-Rayet (WR) stars are massive, energetic stars at the end of their lives. They generate strong winds that sweep their surrounding material and create strong shockwaves as they collide with the interstellar medium (ISM). This process heats up the ISM to high enough temperatures to produce X-rays. This rare phenomenon was observed using XMM-Newton, ESA’s space telescope.
The neutron star merger named GW170817/GRB 170817A that took place last August, was the first cosmic event that astronomers were able to observe both light and gravitational waves! Now scientists discovered that probably this merging process also created the lowest mass black hole ever detected!!