Observational evidence for extraterrestrial gamma-ray line sources

Details Observational evidence for extraterrestrial gamma-ray line sources Observational evidence for extraterrestrial gamma-ray line sources

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978grsa.rept..228j&link_type=abstract

In NASA. Goddard Space Flight Center Gamma Ray Spectry. in Astrophys. p 228-251 (SEE N78-31971 22-88)

Astronomy and Astrophysics

Astronomy

18

Astronomical Spectroscopy, Cosmic Rays, Extraterrestrial Radiation, Gamma Ray Astronomy, Line Spectra, Continuous Spectra, Crab Nebula, Cryogenic Equipment, Gamma Ray Telescopes, Radiation Detectors

Scientific paper

During the 1974 balloon flight of a high spectral resolution gamma-ray telescope, observing in the energy range of about 50 keV to 10 Mev, evidences were gathered for two cosmic sources of gamma-ray lines. These are a 73 keV line feature superimposed on a power law continuum spectrum in the 55 to 300 keV range from the Crab nebula; and a flare-like event lasting about twenty minutes, during which four intense gamma-ray lines were measured at .41, 1.79, 2.22 and 5.95 MeV. The properties and operation of the detector used are described. The measured spectrum and count rate are discussed.

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