| GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS |
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Fermi γ-Ray Pulsars: Spectral and Generation Order Parameters |
| CAI Yan, A. Taani**, WANG Wei, ZHAO Yong-Heng, ZHANG Cheng-Min
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National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
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| Cite this article: |
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CAI Yan, A. Taani, WANG Wei et al 2011 Chin. Phys. Lett. 28 089702 |
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Abstract We examine the theory of generation order parameters. Three kinds of generation order parameters are introduced, which describe the production of high-energy γ photons in a cascade process scenario. We find a correlation between the average power−law photon index Γ and spin−down rate .P in 38 common FERMI γ−ray pulsars, and find that the third generation order parameter, which implies that the magnetic field may have the most significant effect on the high-energy γ photon absorption in the cascade processes, is the best one. The statistical work shows that the theory of generation order parameters can be applied to describe the the γ-ray pulsar radiation mechanisms in the cascade processes.
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| Keywords:
97.60.Gb
94.05.Dd
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Received: 29 November 2010
Published: 28 July 2011
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