A model of unpulsed gamma rays from the Crab pulsar

Details A model of unpulsed gamma rays from the Crab pulsar A model of unpulsed gamma rays from the Crab pulsar

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...413..694c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 413, no. 2, p. 694-699.

Astronomy and Astrophysics

Astronomy

5

Crab Nebula, Gamma Ray Spectra, Pair Production, Photons, Pulsars, Astronomical Models, Compton Effect, Gamma Ray Astronomy

Scientific paper

We study the possibility that the unpulsed gamma rays in the energy range of 100 MeV-10 GeV from the direction of the Crab Nebula and pulsar are actually emitted from a region extending to a couple of light cylinder radii from the pulsar instead of from the extensive nebula. In our model, two pulsed photon beams from two different outer gaps cross each other beyond the light cylinder and result in pair production. Since the pitch angles of these pairs do not correlate with the local magnetic field, and the typical mean free path for pair production is comparable to the local radius of curvature, the subsequent synchrotron radiation and inverse Compton scattering produce unpulsed X-rays and gamma rays, respectively.

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