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题名: The process of photon-splitting and its effect on pulsar emission: The analytic approach
作者: Wei DaMing(韦大明); Lu Tan(陆埮)
刊名: ASTROPHYSICS AND SPACE SCIENCE
出版日期: 2000
卷号: 272, 期号:4, 页码:395-401
学科分类: Astronomy & Astrophysics
文章类型: Article
英文摘要: Magnetic 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.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: STRONG MAGNETIC FIELD ; GAMMA-RAY PULSARS ; POLAR CAPS ; GAPS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000089142300008
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/11110
Appears in Collections:陆埮_期刊论文

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作者单位: 1.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:
韦大明、陆 埮.The Process of Photon-Splitting and its Effect on Pulsar Emission: The Analytic Approach,ApSS,2000,272(0):395
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