The gravitational waves from this event took a billion light-years to reach Earth.
For the first time in history, scientists have witnessed black holes devouring neutron stars. According to the CBS News, this is a rare cosmic phenomenon, and the event just observed took place a billion years ago.
Previously, scientists have encountered the phenomenon of two black holes smashing into each other and the collision of two neutron stars. However, this is the first time that humans have observed the collision between the two largest objects in the universe, proving that theories about this event in the past are true.
Image from the MAYA simulation of a binary merger of a neutron star and a black hole (NSBH). Photo: Swinburne University.
A team of more than 1,000 scientists caught the phenomenon at the US Laser Interferometer Gravitational Wave Observatory and the Virgo Gravitational Wave Observatory in Italy. They recorded the event in January 2020, and after more than a year of research published the report in The Astrophysical Journal Letters on June 29.
According to researchers, observations of death spirals and the merger of black holes and neutron stars will reveal some of the universe’s most complex mysteries, including the building blocks of matter. and the continuum of space-time.
Although the phenomenon occurred about a billion years ago, the gravitational waves in space-time from those collisions were so large that they shook the entire universe, said Susan Scott, co-author of the study. , and they have just completed 900 million light-years to reach Earth.
“These collisions have rattled the core of the universe, and we’ve detected the ripples they create. Each collision is not just a combination of two massive, dense objects. . The black hole swallowing the entire neutron star around it is like a Pac-Man game,” Scott said on June 30.
In the first collision, recorded on January 5, 2020, a black hole 9 times the mass of the Sun swallowed a neutron star twice as massive as the Sun.
A second phenomenon was recorded 10 days later, in which a black hole six times the size of the Sun swallowed another neutron star. This event took place a billion light-years away.
Black holes and neutron stars revolve around each other at half the speed of light, which results when stars reach the end of their lives.
The mass of a neutron star is squeezed into an extremely dense star, about the size of a city. According to scientists, one teaspoon of neutron star weighs as much as the entire human race.
According to Patrick Brady, co-author of the study, astronomers did not find the light emitted by this event, likely because they were too far away from Earth and in this case the black holes were large enough to swallow them. entire neutron star, not letting any light escape.
“We’ve completed the final piece of the puzzle with the first confirmed observations of gravitational waves from this collision,” Scott said.
“With the new discovery of a neutron star-black hole merger, we have found the solution to the missing binary. We can finally understand how many systems of black holes and neutron stars exist, how often they merge, and why we still haven’t seen phenomena in the Milky Way,” said co-author Astrid Lamberts. fake of the report said.
According to the Zing/CBS News
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