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High-Energy Gamma Rays from Afterglow of Long Gamma-Ray Burst 5nvklj





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High-Energy Gamma Rays from Afterglow of Long Gamma-Ray Burst

Dragon
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Post by Dragon Sat Jun 05, 2021 2:02 am

Long gamma-ray bursts are bright flashes of extragalactic gamma rays produced during the collapse of a massive star.

A gamma-ray burst itself lasts only a few seconds but is followed by an afterglow that can persist for hours or days.

Astronomers using the High Energy Stereoscopic System (H.E.S.S.), an array of five gamma-ray telescopes located in Namibia, have now observed the afterglow of GRB 190829A, a nearby long gamma-ray burst.


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High-Energy Gamma Rays from Afterglow of Long Gamma-Ray Burst 334pu7m
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Post by Dragon Sat Jun 05, 2021 2:03 am

High-Energy Gamma Rays from Afterglow of Long Gamma-Ray Burst Image_9730-GRB-190829A
. Image credit: Science Communication Lab, DESY.

An artist’s impression of a relativistic jet of a gamma-ray burst, breaking out of a collapsing star, and emitting very-high-energy photons.


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High-Energy Gamma Rays from Afterglow of Long Gamma-Ray Burst 334pu7m
Dragon
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Post by Dragon Sat Jun 05, 2021 2:04 am



Hubble Studies High-Energy Gamma Ray Burst


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High-Energy Gamma Rays from Afterglow of Long Gamma-Ray Burst 334pu7m
Dragon
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Post by Dragon Sat Jun 05, 2021 2:06 am



Gamma-Ray Burst GRB 190829A

Scientists have gained the best view yet of the brightest explosions in the universe: A specialized observatory in Namibia has recorded the most energetic radiation and longest gamma-ray afterglow of a so-called gamma-ray burst (GRB) to date.


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High-Energy Gamma Rays from Afterglow of Long Gamma-Ray Burst 334pu7m

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