The first black hole ever found is larger than before
Cygnus X-1 is the heaviest stellar black hole without the application of Gravity Waves.
New measurements from the Cygnus X-1 black hole/star pair reveal that the black hole is about 21 times the weight of the sun — about 1.5 times the weight of previous statistics. Astronomers reconsider how certain black-hole stars grow. The revised mass. Their parent star must have gone down in less mass in the stellar wind than predicted, the researchers report online on February 18 in Science, for a huge black hole of a star. Their parent star is the most significant.
It is important to know how much mass stars lose by stellar winds over the years to understand how these stars enrich their atmosphere by heavy elements. It is also necessary when they burst and leave behind black hole, to understand the masses and compositions.
Cygnus X-1's upgraded mass calculation is "a huge change to a former favorite," says Tana Joseph, an astronomer not interested in work at the University of Amsterdam. Stephen Hawking famously bet physicist Kip Thorne that the 1964 Cygnus X-1 system didn't contain the black hole — and awarded a 1990 wager where scientists broadly acknowledged the first black hole known to the universe from Cygnus X-1.
News reveal that Cygnus X-1 is about 7,200 light years from the Earth and not about six,000 light years from the previous estimate. This means that Cygnus X-1's star is much brighter than astronomers assumed, hence larger. The star is about 40.6 suns, according to the researchers. In order to justify its gravitational jug on such a massive star the black hole must also be more massive. The black hole weighs about 21.2 suns, which is considerably heavier than its previously measured solar masses, according to scientists.
The latest mass calculation of the black hole of the Cygnus X-1 is so great that it challenges astronomers to consider the massive stars that fall into the shapes of black holes, says co-author of the studies Ilya Mandel, astrophysicist at Melbourne University.
The gravitational wave detectors of LIGO and Virgo found black holes in other galaxies weighing tens of solar mass. But probably because LIGO peers in the early world of distant galaxies, Joseph says. At that time there were less heavy objects, so there were less stellar winds.