A theory that black holes at the center of the two galaxies will end up as binary black hole, where the two black holes are locked together by gravitational forces in close orbit around each other, can be proved by the flashing of light from the deep space.
Astronomers at the University of Maryland say that they have detected a pulsing quasar which proves the existence of the binary black hole.
Suvi Gezari, astronomy Professor and coauthor of the study said, “We believe we have observed two super massive black holes in closer proximity than ever before.”
Einstein’s theory of general relativity predicts if the binary black hole is very close to each other, then they will emit gravitational waves, and the scientists have detected the gravitational waves.
Black hole is present at the center of the galaxy and they are surrounded by matter and dust, as the black holes have huge gravitational force the matter is attracted by the black hole, and it is heated and accelerated to a point such that it emits massive amounts of energy creating brightest energy sources known as quasars.
Scientist said that the binary black hole is where two black holes orbit each other and the consumption of the matter by the black hole will be cyclical, with a resulting periodical dimming and brightening of the quasar.
The astronomers have detected such quasar using the -STARRS1 Medium Deep Survey telescope in Hawaii.
They found a quasar PSO J334.2028+01.4075, with a massive black hole of around 10 billion solar masses and they were emitting periodic flash of light repeating every 542 days.
The majority of the quasars are not regular and arrhythmic, so the clock like precision of the quasar is a strong evidence that they are binary black hole which are emitting such pattern of quasar which are generally exhibited by binary black holes.
Tingting Liu, graduate astronomy student and study’s first author said, “The discovery of a compact binary candidate supermassive black hole system … which appears to be at such close orbital separation, adds to our limited knowledge of the end stages of the merger between supermassive black holes.”
As technology develops larger and larger telescope becomes available, and then survey of much larger space could potentially locate thousands of merging galaxies.
Lui said, “What’s really cool is that we may be able to watch the orbital separation of these supermassive black holes get smaller and smaller until they merge.”