Researchers derived the spectrum of the very-high-energy gamma-ray afterglow emission of a relatively nearby gamma-ray burst.
About
Gamma-ray bursts (GRBs) are immensely energetic explosions that have been observed in distant galaxies.
They are the brightest and most energetic electromagnetic events known to occur in the universe.
Bursts can last from ten milliseconds to several hours.
After an initial flash of gamma rays, a longer-lived "afterglow" is usually emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, microwave and radio)
The intense radiation of most observed GRBs is released during processes like creation or merging of neutron stars or black holes.
All observed GRBs have originated from outside the Milky Way galaxy.
GRBs were first detected in 1967 by the Vela satellites.