Pulsed Nonthermal Photon Features for the Crab Pulsar

Details Pulsed Nonthermal Photon Features for the Crab Pulsar Pulsed Nonthermal Photon Features for the Crab Pulsar

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...707l.169z&link_type=abstract

The Astrophysical Journal Letters, Volume 707, Issue 2, pp. L169-L173 (2009).

Astronomy and Astrophysics

Astronomy

3

Gamma Rays: Theory, Pulsars: Individual: Crab, Radiation Mechanisms: Non-Thermal, Stars: Neutron, X-Rays: Individual: Crab

Scientific paper

We use a modified three-dimensional outer gap model to explain the features of the pulsed emission and spectra of the Crab pulsar from X-ray to above 25 GeV regimes. In such an outer gap model, the phase-averaged spectra below ~1 GeV are mainly produced through the synchrotron self-Compton mechanism, and the spectrum above ~1 GeV are due to the survival curvature photons. Our results show that (1) the observed phase-averaged spectrum from X-rays to γ-rays including the Fermi LAT and MAGIC data can be reproduced well, and (2) the basic properties of both the observed phase-dependent spectra of both X-ray and γ-ray up to >25 GeV can be interpreted in this model.

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