L. Zhang and K. S. Cheng 2002 ApJ 569 872 doi:10.1086/339347
L. Zhang1,2 and K. S. Cheng1
Show affiliationsWe present a theoretical study of phase-dependent X-ray emission from the Crab pulsar. In the three-dimensional outer gap model for the Crab pulsar, X-ray emission is produced by synchrotron radiation of the secondary e± pairs, which is sensitive to the local properties of the emission regions, i.e., local magnetic field strength and local number e± density. We calculate X-ray pulse profiles for different energy bands and phase-dependent spectral indices of X-rays. We show that such a model can reproduce approximately the basic properties of the observed phase-dependent X-ray spectra of the Crab pulsar.
Issue 2 (2002 April 20)
Received 2001 October 12, accepted for publication 2001 December 26
L. Zhang and K. S. Cheng 2002 ApJ 569 872
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