Astronomers Invented an ‘Impossible’ Stellar Black Hole in Milky Way :
An international team of astronomers has discovered an exceptionally large size black hole of a stellar source at 8 times more than the Sun’s mass.
Impossible Stellar Black Hole in Milky Way
We know that our galaxy is related to stellar-mass black holes, which were formed when large stars collapsed on their own by fuel. But scientists thought that these national stars could reach only 20 times the mass of our sun. Now, new discoveries suggest that this hypothesis is incorrect, as an international team of astronomers has discovered a supermassive black hole nearly three times the size of our own galaxy.
“Black holes of such mass should not even exist in our Milky Way Galaxy, according to most of the current models of stellar evolution,” said Dr. Jifeng Liu, an astronomer at the National Astronomical Observatory of China, the Chinese Academy of Sciences.
“We thought that very massive stars with the chemical composition typical of our Galaxy must shed most of their gas in powerful stellar winds, as they approach the end of their life. Therefore, they should not leave behind such a massive remnant.”
“This black hole is far more massive than typical black holes that we routinely find in the Milky Way, whose masses distribute between 5 and 15 solar masses”
DR. Georgi Caesare, a researcher at the Instituto di Astrophysica de Canaria and the Universidad de la Laguna.
“The newly-discovered black hole is twice as massive as what we thought possible. Now theorists will have to take up the challenge of explaining its formation.” The newfound blackhole is a part of LB-1, a star-blackhole binary system located approximately 5,3 light years away in the constellation of Gemini.
“LB-1 is located at coordinates 188.23526° (Galactic longitude), +02.05089° (Galactic latitude),” the scientists said.
The black hole’s companion is a subgiant B-type star 8.2 times heavier and 9 times larger than the Sun. The star is only 35 million years old, and it orbits the black hole once every 78.9 days.
“The LIGO/Virgo experiments revealed black holes with masses of several tens of solar masses, much higher than previously known Galactic black holes,” the astronomers said. “The discovery of a 68-solar-mass black hole in LB-1 would confirm their existence in our Milky Way.”
“LIGO/Virgo black holes are naturally explained within the framework of standard stellar evolution theory,” added Dr. Chris Belczynski, from the Polish Academy of Sciences.
Scientists have previously found clues that black holes of this size could be present using data from laser interferometer gravitational-wave observatory (LGO) facilities to detect gravitational waves. Massive black holes in distant regions of space send space-time waves into collisions when these waves form. Until now, the collisions that have been reviewed suggest black holes collide, which were much larger than ordinary black holes.
With the discovery of the LB-1 Blackhole, we found evidence of a large black hole in our backyard that is commonly called “this discovery forced us to re-examine the stellar-mass black hole model,” said Professor David Reitze, director of the University of Florida’s LIGO.