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The process of photon-splitting and its effect on pulsar emission: The analytic approach
Wei, DM; Lu, T
2000
Source PublicationASTROPHYSICS AND SPACE SCIENCE
Volume272Issue:4Pages:395-401
AbstractMagnetic photon splitting gamma --> gamma gamma, a quantum electrodynamic process that becomes important when magnetic field approaching the quantum critical value, B-c = 4.413 x 10(13) G, may have important effects on pulsar radio emission. According to the standard model, the pulsar radio emission is produced by coherent curvature radiation of a large amounts of e(+/-) pairs, which are thought to be generated by the pair creation process gamma + B --> e(+/-). However, if the magnetic field is strong enough, the photon splitting may dominate the pair creation process, then the amounts of e+/- pairs and the radio luminosity will be strongly suppressed and may be undetectable. Here we use the fitted analytical formula of the photon splitting attenuation coefficient to study the above process, and find that the photon splitting will strongly decrease the radio emission when B > 10(13) G. We also note that the photon splitting can strongly but not totally suppress the creation of pairs due to the diminishing dependence of B in the attenuation coefficient. We find that the ratio of the probability of a photon being absorbed by photon splitting to that by pair creation is no more than about six.
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordSTRONG MAGNETIC FIELD ; GAMMA-RAY PULSARS ; POLAR CAPS ; GAPS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000089142300008
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/11110
Collection院士文集_陆埮
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100864, Peoples R China
3.Nanjing Univ, Dept Astron, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Wei, DM,Lu, T. The process of photon-splitting and its effect on pulsar emission: The analytic approach[J]. ASTROPHYSICS AND SPACE SCIENCE,2000,272(4):395-401.
APA Wei, DM,&Lu, T.(2000).The process of photon-splitting and its effect on pulsar emission: The analytic approach.ASTROPHYSICS AND SPACE SCIENCE,272(4),395-401.
MLA Wei, DM,et al."The process of photon-splitting and its effect on pulsar emission: The analytic approach".ASTROPHYSICS AND SPACE SCIENCE 272.4(2000):395-401.
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