GRO: Studies of high energy pulsars with EGRET

Details GRO: Studies of high energy pulsars with EGRET GRO: Studies of high energy pulsars with EGRET

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994cuny.rept.....r&link_type=abstract

Annual Status Report, 15 Jul. 1993 - 14 Jul. 1994 Columbia Univ., New York, NY. Depts. of Astronomy and Physics.

Astronomy and Astrophysics

Astronomy

Annihilation Reactions, Gamma Ray Observatory, Gamma Ray Telescopes, Pulsar Magnetospheres, Pulsars, Red Shift, Bandwidth, Galactic Radiation, Gamma Ray Spectra, Gamma Rays, Light Curve

Scientific paper

The reported e+/- annihilation line from the Crab pulsar has three remarkable properties. It is very strong (approximately 1040e+/- annhilations/sec.), red shifted (by about 70 KeV relative to mc2 = 511 KeV), and very narrow (width approximately equals 10 KeV). The e+/- annihilation did not occur near the star in polar cap accelerator models so that the redshift, suggestive in its magnitude of a gravitational redshift from annihilation near the stellar surface, did not have an explanation. Therefore, concentration was placed on e+/- production from outer-magnetosphere accelerator models.

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