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Spectral properties, generation order parameters, and luminosities for spin-powered X-ray pulsars
Wang, W; Zhao, YH
2004-02-01
Source PublicationASTROPHYSICAL JOURNAL
Volume601Issue:2Pages:1038-1044
AbstractWe show the spectral properties of 15 spin-powered X-ray pulsars, and the correlation between the average power-law photon index and spin-down rate. Generation order parameters (GOPs) based on polar cap models are introduced to characterize the X-ray pulsars. We calculate three definitions of generation order parameters arising from the different effects of magnetic and electric fields on photon absorption during cascade processes, and study the relations between the GOPs and spectral properties of X-ray pulsars. There exists a possible correlation between the photon index and GOP in our pulsar sample. Furthermore, we present a method stemming from the concept of GOPs to estimate the nonthermal X-ray luminosity for spin-powered pulsars. Then X-ray luminosity is calculated in the context of our polar cap accelerator model, which is consistent with most observed X-ray pulsar data. The ratio between the X-ray luminosity estimated by our method and the pulsar's spin-down power is consistent with the L-X similar to 10(-3)L(sd) feature.
KeywordPulsars : General Stars : Neutron X-rays : Stars
Indexed BySCI
Language英语
WOS IDWOS:000188658100034
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8134
Collection光学天文研究部
AffiliationChinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Wang, W,Zhao, YH. Spectral properties, generation order parameters, and luminosities for spin-powered X-ray pulsars[J]. ASTROPHYSICAL JOURNAL,2004,601(2):1038-1044.
APA Wang, W,&Zhao, YH.(2004).Spectral properties, generation order parameters, and luminosities for spin-powered X-ray pulsars.ASTROPHYSICAL JOURNAL,601(2),1038-1044.
MLA Wang, W,et al."Spectral properties, generation order parameters, and luminosities for spin-powered X-ray pulsars".ASTROPHYSICAL JOURNAL 601.2(2004):1038-1044.
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