Homehttps://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/Sciencehttps://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/A new type of black hole has been discovered, astronomers say
A new type of black hole has been discovered, astronomers say
Researchers created a black hole count when they made the discovery. The discovery, in addition to sharing a new way to search for black holes, was published Thursday in the journal Science.
"We show this hint that there is another population out there that is yet to be explored in the search for black holes," says Todd Thompson, lead author of the study and professor of astronomy at Ohio State University.
to form after the stars die, shrink, and explode, creating gravitational vortices so powerful that even light cannot escape them, they can be found in the center of galaxies acting as a supermassive motor.
not always so when some stars they die and collapse, they form neutron stars that are small and incredibly dense.
Both are important to study because astronomers can learn about the evolution of stars and the formation of black holes.
But if astronomers focus only on supermassive black holes, such as the one in the center of our galaxy and neutron stars, do they lack entire population demographics, the researchers say, comparing it to censors, including people of some height.
"People are trying to understand the explosions of supernovae, how supermassive black stars explode, how the elements have formed into supermassive stars," Thompson said. "So if we could discover a new population of black holes, that would tell us more about which stars explode, which ones don't, which ones form black holes that form neutron stars. This opens up a new field of study. "[1
two stars circle around them – like the twins we see on Tatooine in the Star Wars movies.
If one star dies, the other is still orbiting the space where it existed, even if that space is now filled by a black hole or a neutron star.
Until this study, astronomers have discovered black holes that stack between five and 15 times the mass of our sun, while the neutron stars are only about twice as large as the mass of the sun. But a neutron star can collapse and turn into a black hole if it reaches more than 2.5 times the mass of the sun. Then this black hole will grow.
Things changed after a gravitational-wave observatory called LIGO spotted two black holes merging into one in a galaxy at a distance of 1.8 million light-years. The two monstrous black holes were 31 times larger than the mass of the sun and 25 times larger than its mass, respectively.
wow, "because it was such a grand thing," Thompson said. "Not only because it proved that LIGO worked, but also because the masses were huge. Black holes of this size were a big deal – we had never seen them before."
This extended the known range of black holes, suggesting that they may be larger. But what about those smaller ones existing between the neutron star boundary and the black holes?
Thompson and his colleagues turned to APOGEE data. This is the Galactic Evolution Experiment of the Apache Point Observatory, which has observed 100,000 stars in the Milky Way.
They looked to see if the displacement of the wavelength of the star suggested a companion who was otherwise invisible. If they showed a change in wavelength, going from blue to red, this might suggest that the satellite has turned into a black hole.
, Thompson and his colleagues found a giant red star orbiting something smaller than the smallest known black hole but larger than any known neutron star.
The potential low-mass black hole is estimated to be 3.3 times the mass of our sun. Previously, the smallest black hole found was 3.8 times the mass of our sun.
"What we did here came up with a new way to look for black holes, but we also potentially identified one of the first of a new class of low-mass black holes that astronomers didn't know about yet," Thompson said. from things they tell us about their formation and evolution, and they tell us about their nature. "