Gamma-ray astronomy
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| definition | The study of gamma rays from extraterrestrial sources, especially gamma-ray bursts. Gamma-rays are an electromagnetic wave with a typical wavelength less than 10-2Å (10-12 m), corresponding to frequencies above 1019 Hz and photon energies above 100 keV. | |||||||||||
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| contributor | AAS_Frey.Katie original | |||||||||||