This is the best summary I could come up with:

The BOAT was detected on the morning of October 9, 2022, by the Gemini South telescope in Chile, operated by the National Science Foundation’s NOIRLab.

It occurred 2.4 billion light-years from Earth and was exceptionally long-lasting, as well as 70 times brighter than any previously recorded gamma-ray burst.

Now, the LHAASO Collaboration (short for the Large High Altitude Air Shower Observatory) reports extremely high-energy gamma rays from the BOAT.

In the standard model of gamma-ray burst afterglows, “afterglow radiation originates from the collision of the rapidly moving ejecta with the surrounding gas, generating high-speed shocks that accelerate electrons to very high energies,” said lead author Songzhan Chen, a physicist at the Institute of High Energy Physics Chinese Academy of Sciences and the Tianfu Cosmic Ray Research Center, in an email to Gizmodo.

“Theoretically, the higher the energy of these photons, the faster the radiation intensity should decay,” Chen added.

According to a separate paper published yesterday in Nature Communications, the BOAT may have also caused perturbations high in Earth’s ionosphere, the sort of thing that could effectively deplete the planet’s ozone layer for a short period of time.

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