On the light curve and spectra of x-rays and gamma-rays from the crab pulsar

Citation
L. Zhang et al., On the light curve and spectra of x-rays and gamma-rays from the crab pulsar, CHIN PHYS L, 17(7), 2000, pp. 544-546
Citations number
12
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS LETTERS
ISSN journal
0256307X → ACNP
Volume
17
Issue
7
Year of publication
2000
Pages
544 - 546
Database
ISI
SICI code
0256-307X(2000)17:7<544:OTLCAS>2.0.ZU;2-4
Abstract
We use a three-dimensional pulsar magnetosphere model to study the light cu rve and spectra of x-rays and gamma-rays from the Crab pulsar. In this mode l, the vertical size of the outer gap is first determined by a self-consist ent model in which the outer gap is limited by pair production from collisi ons of thermal photons produced by polar cap heating of backflow outer gap current and curvature photons emitted by gap accelerated charged particles. The transverse size of the outer gap is determined by local pair productio n conditions. In principle, tl,ere are two topologically disconnected outer gaps present in the magnetosphere of a pulsar, and both incoming and outgo ing particle flows are allowed. However, double-peak light curves with stro ng bridges are most common, Making use of the three-dimensional structure o f the outer gap and its local properties, we compare the results of our mod el with the light curve and phase-resolved spectra of the Crab pulsar.