The enormous gamma-ray burst, called the Brightest Of All Time (or BOAT), may be powered by its strange jet structure, scientists say.
Scientists may finally know what made the largest explosion in the universe ever seen by humankind so powerful.
The GRB officially designated GRB 221009A but nicknamed the BOAT, or the brightest of all time, was spotted on October 9, 2022, and stood out from other GRBs due to its extreme nature. It was seen as an immensely bright flash of high-energy gamma-rays, followed by a low-fading afterglow across many wavelengths of light.
Even before the BOAT was spotted, GRBs were already considered the most powerful, violent, and energetic explosions in the universe, capable of blasting out as much energy in a matter of seconds as the sun will produce over its entire around ten billion-year lifetime. There are two types of these blasts, long-duration, and short-duration, which might have different launch mechanisms, both resulting in the creation of a black hole.
Thus, the jet of GRB 221009A appears to possess both wide and narrow"wings" that differentiate it from the jets of other GRBs. This could explain why the afterglow of the BOAT continued to be seen by astronomers in multiple wavelengths for months after its initial discovery. "GRB jets need to go through the collapsing star in which they are formed," he said.
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Brightest gamma-ray burst ever seen, the largest known explosion since Big Bang, has a unique jet structure unlike any otherThe GRB, called the Brightest Of All Time (or BOAT) may be powered by its strange jet structure, scientists say.
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