Sunday, January 29, 2023

NASA captured the unusual moment a black hole devours a star

Black Hole Star
A disk of hot gas rotates around the black hole. , Photo: NASA.

Recently, several NASA telescopes managed to capture a picture of an unusual moment in which A giant black hole swallowed an ominous star who reached him.

According to the National Aeronautics and Space Administration (NASA), black hole It is located at a distance of about 250 million light-years from Earth in the center of another galaxy, and according to their observations once gravitationally black hole completely broke Estrella, It was possible to see a dramatic increase in high-energy X-ray light around the black hole.

This indicated that as the stellar material was pulled towards its doom, it formed an extremely hot structure called the corona above the black hole.

Thanks to the NuSTAR (Nuclear Spectroscopic Telescopic Array) satellite NASAWith the most sensitive space telescope capable of observing these wavelengths of light and close to the event, it was possible to obtain an unprecedented view of the formation and evolution of the corona, according to a new study published in the Astrophysical Journal.

According to the scientists, when NuSTAR detected a corona, a cloud of hot plasma or gas atoms from which electrons have been stripped, coronas are usually visible with jets of gas flowing in opposite directions from a hole. Huh. However, with this tidal event, there were no jets, making corona observations unpredictable.

  • Coronas emit higher-energy X-rays than any other part of the black hole, but scientists don’t know where the plasma comes from or how it gets so hot.

Yuhan Yao, undergraduate, said, “We’ve never seen an X-ray-emitting tidal disruption event without the presence of the jet, and this is really fantastic because it means we can potentially tease out what causes the jet.” And what is the reason.” student at Caltech in Pasadena, Calif., and lead author of the new study.

“Our observations agree with the idea that magnetic fields have something to do with the way the corona formed, and we want to know why the magnetic field is getting so strong,” he said.

event named AT2021EHB and was first observed on March 1, 2021, by the Zwicky Transient Facility (ZTF) located at Palomar Observatory in Southern California. It was later studied by NASA’s Neil Gehrels Swift Observatory and the Neutron Star Interior Composition Explorer (NICER) telescope, which observes at X-ray wavelengths comparable to Swift.

Then, about 300 days after the event was first detected, NASA’s NuSTAR began observing the system.

According to the management, this observed phenomenon not only reflects how destruction of a star by a black holeA process that is formally known as a tidal disruption event, but can also be used to better understand what material captured by one of these giants was consumed before it was completely consumed. what happens.

Because most black holes that scientists can study are surrounded by hot gas that builds up over many years, sometimes millennia, and forms a disk billions of kilometers wide. In some cases, these disks outshine entire galaxies.

Even around these bright sources, but especially around much less active black holes, a lone star stands out, tearing itself apart and devouring itself. From start to finish, the process often takes a few weeks or months.

The observability and short duration of tidal disruption events make them particularly attractive to astronomers, who can figure out how gravity black hole Manipulates the material around it, creating incredible light shows and new physical features.

it was the fifth closest example a black hole destroying a star Have you ever seen

Nation World News Desk
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