SAS-2 gamma-ray observations of PSR 1747-46

Details SAS-2 gamma-ray observations of PSR 1747-46 SAS-2 gamma-ray observations of PSR 1747-46

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apl....17..173t&link_type=abstract

Astrophysical Letters, vol. 17, no. 4, 1976, p. 173-176.

Astronomy and Astrophysics

Astronomy

12

Gamma Rays, Pulsars, Sas-2, X Ray Astronomy, Spaceborne Astronomy, Spaceborne Telescopes, X Ray Sources

Scientific paper

Evidence is reported for the observation of gamma-ray emission from the radio pulsar PSR 1747-46 by the gamma-ray telescope aboard SAS 2. The evidence is based on the presence of both an approximately 3-sigma enhancement of gamma rays at the pulsar's location and an approximately 4-sigma peak in the phase plot of 79 gamma-ray events whose phase was calculated from the pulsar's known period. The gamma-ray pulsation is found to appear at a phase lag of about 0.16 from that predicted by the radio observations. The pulsed gamma-ray fluxes above 35 MeV and 100 MeV are estimated, and it is shown that the gamma-ray pulse width is similar to the radio pulse width. It is concluded that PSR 1747-46 is a most likely candidate for pulsed gamma-ray emission.

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