The satellites observing gamma rays from the space saw an extremely powerful event on 9 October 2022 at 13:16:59 UT.
It was an unprecedented, extremely bright burst lasting hundreds of seconds. This burst, dubbed GRB 221009A, is the brightest GRB ever detected in nearly 55 years of operating gamma-ray observatories. It was so intense that the gamma rays disturbed Earth’s ionosphere, too.
A research article about this event was published today at the Science Advances. This paper, titled "A structured jet explains the extreme GRB 221009A" states, that this gamma ray burst originated from a relativistic, shallow structured jet, burping out from a rapidly spinning massive black hole.
Read the article here or learn more about the GRB's and GRB 221009A in this Wikipedia article.
Image by NASA/Swift.