A detailed analysis of the high energy gamma-ray emission from the Crab pulsar and nebula

Details A detailed analysis of the high energy gamma-ray emission from the Crab pulsar and nebula A detailed analysis of the high energy gamma-ray emission from the Crab pulsar and nebula

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...174...85c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 174, no. 1-2, March 1987, p. 85-94.

Astronomy and Astrophysics

Astrophysics

74

Crab Nebula, Gamma Ray Spectra, Pulsars, Cos-B Satellite, Energy Spectra, Histograms, Light Curve

Scientific paper

The gamma-ray emissions from the Crab pulsar and nebula are analyzed. The data were collected from 1975-1982 in the Galactic anticenter region by COS-B in the energy range 50-3000 MeV. The temporal behavior of the pulsed gamma-ray flux from PSR 0531 + 21 and the unpulsed gamma-ray emissions from the Crab region are examined. It is determined that the spectrum of the pulsar emission is represented by a single power law with an index of 2.00 + or - 0.10 over the energy range of the instrument, and no systematic variation of spectral index with pulsar phase is noted; the spectrum of the unpulsed gamma-ray emission is represented by a single power law with a spectral index of 2.7 + or - 0.3.

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