Concept information
Terme préférentiel
gamma-ray burst
Définition
- In gamma-ray astronomy, gamma-ray bursts (GRBs) are immensely energetic explosions that have been observed in distant galaxies. They are the most energetic and luminous electromagnetic events since the Big Bang. 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 thought to be released during a supernova or superluminous supernova as a high-mass star implodes to form a neutron star or a black hole. A subclass of GRBs appear to originate from the merger of binary neutron stars. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Gamma-ray_burst)
Synonyme(s)
- γ ray burst
- γ-ray burst
Traductions
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français
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sursaut de rayons gamma
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sursaut Rγ
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sursaut γ
URI
http://data.loterre.fr/ark:/67375/MDL-MHDSXPQ4-3
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