Possible gamma-ray line from the Crab Nebula

Details Possible gamma-ray line from the Crab Nebula Possible gamma-ray line from the Crab Nebula

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.266..696l&link_type=abstract

Nature, vol. 266, Apr. 21, 1977, p. 696-698.

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Crab Nebula, Gamma Rays, Line Spectra, X Ray Astronomy, X Ray Spectra, Balloon Sounding, Gravitational Effects, Positron Annihilation, Red Shift

Scientific paper

A balloon-borne gamma-ray telescope searching for celestial gamma-ray lines in the energy range 100 keV to 5.0 MeV provided evidence for a line feature from the Crab Nebula at about 400 keV. Although the counting statistics are not conclusive, the energy is such that the feature may be gravitationally redshifted positron annihilation radiation occurring at the surface of the Crab Pulsar.

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