Unlike previously observed, astronomers scratch their heads after detecting a strange, long-lasting cosmic explosion.
The explosion was a series of repeated explosions of high-energy radiation known as gamma-ray bursts. These bursts, the most powerful known explosions in the universe, usually last only for milliseconds to a few minutes, but were observed to erupt almost a day in July.
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“Because the GRB is a catastrophic event, they are expected to disappear just once, as the sources that produced them cannot withstand a dramatic explosion,” Martin Carillo said in a statement. “The event not only showed repeated and powerful activities, but also baffled us because it seemed cyclical. [been] I saw it before. ”
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NASA’s Fermigamma Ray Space Telescope recorded its first burst on July 2nd. Researchers then discovered that Einstein Probe, an X-ray space telescope run by European partners and the Chinese Academy of Sciences, had detected activity from July 1st almost a day ago.
To study the burst in more detail, the team at the Southern Observatory of Europe (ESO) turned to a very large telescope, one of the world’s most advanced optical telescopes in Chile’s Atacama Desert. Although originally thought to have originated within our galaxy, the observations of a very large telescope suggested that strange signals had gone beyond that, but the study found that observations later confirmed by the Hubble Space Telescope were later confirmed.
The study authors have investigated several possible explanations for unprecedented repeat explosions.
“If a large star, like a typical GRB, was dead, about 40 times the mass of the sun, it had to be a special death where some materials kept powering the central engine,” Martin-Carrillo said.
Another possible explanation is that a radiation blast was released when a star whose star is a white d star was torn apart by a black hole in what is known as the tidal dircruption event (TDE). However, this would not have been a normal black hole to cause a continuous explosion.
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“Unlike the more typical TDE, the more unusual black holes, perhaps rare stars, which are likely “medium mass black holes,” must be destroyed to explain the properties of this explosion,” Martin Carillo said. “Both options will be the first and this event will be very unique.”
Medium mass black holes are larger than stellar mass black holes (formed when giant stars collapse on their own), but smaller than ultra-high Massive black holes in the centre of most galaxies. Astronomers expect black holes of star mass to collide and merge to form black holes of intermediate mass, which have proven to be extremely difficult.
The team behind the new research is to monitor the aftermath of the explosion and decipher the cause. The next step is to determine the exact location of the explosion. This helps researchers measure the amount of energy they generate.
“We don’t know what this produced or if we can really know, but with this study we took a big step towards understanding this very unusual and exciting object,” Martin-Carrillo said.
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