There is a long gamma flash by GRB221009A with photons with a record 18-TeV energy. The exact nature of the explosion is not yet known.
Neil Gerels' Swift Observatory is a multispectral space telescope capable of observation in hard and soft X-ray, ultraviolet and visible light, which was largely developed by NASA. It was launched in 2004 to help identify, locate and observe gamma-ray. On October 9, 2022, one of these gamma flashes was discovered, known as GRB221009A. The source is called Swift J1913.1 + 1946 in the observatory of the telescope in orbit of our Blue Planet.
It's not the most remote or de facto earliest of the gamma flashes discovered by the noosphere's eyes, but it still beats a record, perhaps not so much by its own energy, which is at least equal to the one that the sun has released for about 10 billion years in just a few seconds, but actually because the energy of some gamma phototons that it released in the distant past and that we find today is slightly higher than that of protons on the BAC.
It is estimated to be about 18 TEV, or 18,000 GAVs, which means that a mass equivalent to more than 18,000 protons can be obtained from just one of these photons.
Although this GRB was much closer than the average known GRB, it was still too far away to threaten life on Earth, it should be recalled that some suggest that the GRB outbreak might have been close enough to explain some of the biological crises that marked the history of the biosphere.
GRB221009A is, as we have already said, a long gamma blast, which means that the astrophysic phenomenon that caused it is what is called hypernova or even super-lighted supernova. It is estimated that this type of star explosion would release more than 100 supernovas. It is estimated that hypernova is occurring in the Milky Way only once every 200 million years.
However, there are still uncertainties about the exact mechanism that produces hypernova, which can be the impact of two massive stars still in the main sequence, or the explosion of a rapidly rotating very massive star in a strong magnetic field.
The other explanation that is often preferred is the explanation of "collapsara", which is the collapse of a very massive star that forms a black hole in its core, which absorbs matter and emits two powerful jets that blow the surface of the stars and are accompanied by a strong gamma radiation.