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In gamma-ray astronomy, gamma-ray bursts (GRBs) are immensely energetic explosions that have been observed in distant galaxies, being the brightest and most extreme explosive events in the entire universe, [1] [2] [3] as NASA describes the bursts as the "most powerful class of explosions in the universe". [4]
8 cze 2023 · GRB 221009A, a long gamma-ray burst, was so bright it effectively blinded most gamma-ray instruments in space. U.S. scientists were able to reconstruct this event with data from NASA’s Fermi Gamma-ray Space Telescope to determine its actual brightness.
21 lis 2023 · The most powerful events in the known universe – gamma-ray bursts (GRBs) – are short-lived outbursts of the highest-energy light. They can erupt with a quintillion (a 10 followed by 18 zeros) times the luminosity of our Sun.
7 gru 2022 · Short bursts emit gamma rays for less than two seconds and are caused by mergers of dense objects like neutron stars. Scientists sometimes observe short bursts with a following flare of visible and infrared light called a kilonova.
26 lip 2021 · On Aug. 26, 2020, NASA’s Fermi Gamma-ray Space Telescope detected a pulse of high-energy radiation that had been racing toward Earth for nearly half the present age of the universe. Lasting only about a second, it turned out to be one for the record books – the shortest gamma-ray burst (GRB) caused by the death of a massive star ever seen.
24 kwi 2024 · On November 12, 2023, a huge burst of gamma radiation hit the European Space Agency’s orbiting INTEGRAL satellite. The rush of radiation lasted just one-tenth of a second, but immediately,...
17 sie 2024 · The GRB 221009A burst, which occurred on October 9, 2022, dubbed the brightest of all time (BOAT), was the strongest gamma-ray burst ever recorded. Observations made by the Swift-BAT instrument...
