The nearest Black Hole: 1000 light years away!
Researchers have so far discovered a black hole that is the one closest to earth. The source can be located next to two massive planets, which can be observe with bare eyes.
The nearest black hole ever discovered to the solar system could be just 1000 light-years away. This mysterious dark neighbor is at least 4.2 times as large as the sun, and resides with two ordinary stars whose funny orbits have given away the existence of the black hole, astronomers wrote in Astronomy & Astrophysics May 6.
Astronomers predict the Milky Way to contain around 100 million and one billion black holes with masses ranging from a few to 100 times that of the earth. Yet several of these are secret black holes. "If it's lonely out there without a friend, you'll never make it," says European Southern Observatory astrophysicist Thomas Rivinius, in Santiago , Chile.
The few hundred small black holes that've been observed so far interfere with their surroundings violently, engulfing a companion star's atmosphere and heating up the gas until it emits X-rays. The preceding closest known black hole, V616 Mon, spreads X-rays from around 3,200 light-years away.
The Milky Way may have several other unknown black holes of equal mass, says astronomer Marianne Heida of ESO, who is stationed in Garching, Germany. "It would be a little too easy if there is just one in the Milky Way, it's next door yes," she says.
It was more than 15 years ago that Rivinius and his colleagues first discovered the black hole by mistake. In 2004 a team led by Stanislav Štefl, then of ESO in Santiago, observed the system as part of a analysis of fast-spinning star pairs. The team thought there might be a third, unseen body locked up with the two visible stars in an orbital dance.
When another black hole, named LB-1, published in November 2019, the team followed the work back up. That black hole seems to orbit a more ordinary star, and seems oddly heavy, about 68 times the sun's mass. Yet team Rivinius believes it's probably a smaller black hole with two companion stars instead, like HR 6819.
It is possible, says astrophysicist J.J, that both HR 6819 and LB-1 are more ordinary than they do appear. Eldridge in New Zealand, at Auckland University. He thinks the structures might include a third huge star with a disk around it, instead of a black hole.