... up with only one plausible scenario to explain it all; the merger of a white dwarf with either a neutron star or a black hole. “The explosion is likely to be the result of a merger between a white dwarf (the core of a star after it has evolved...
... breaks down and density and gravity become infinite – a point that is theorised to exist deep within a black hole. Hawking also proposed that black holes should emit heat and eventually pop out of existence - a process that for miniature...
... report that a fourth confirmed detection of a binary black hole merger has been recorded. It is the first time...ever detection of gravitational waves resulting from the collision of two black holes in a galaxy a billion light-years away," says France...
... houses at the centres of galaxies and they are thought to result from the accretion of matter by a residing supermassive black hole. The international team of astronomers who discovered PS1-10adi have thus looked at whether AGN activity is behind...
... can be measured and used as a ‘standard ruler’ for length scale in cosmology. For this, quasars powered by supermassive black holes at the centres of galaxies were used as they appear as a very bright point source in the distant past. Quasars...
...Quasars are a type of extremely luminous AGN. They derive their energy from material spiralling in towards an enormous black hole at the center of a galaxy forming a disk called an accretion disk. As the gas and dust spirals closer in, it accelerates...