National Tsing Hua University Institutional Repository:The BeppoSAX Phase-resolved Spectra of the Anomalous X-ray Pulsar RX J170849-400910
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    National Tsing Hua University Institutional Repository > 理學院 > 天文研究所 > 會議論文  >  The BeppoSAX Phase-resolved Spectra of the Anomalous X-ray Pulsar RX J170849-400910


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    题名: The BeppoSAX Phase-resolved Spectra of the Anomalous X-ray Pulsar RX J170849-400910
    作者: Chang, H.-K.
    教師: 張祥光
    日期: 2002
    關聯: The Proceedings of the IAU 8th Asian-Pacific Regional Meeting,Volume II, held at National Center of Sciences, Hitotsubashi Memorial Hall, Tokyo,July 2 - 5, 2002,p. 317-318
    关键词: BeppoSAX Phase-resolved Spectra
    Anomalous X-ray Pulsar RX
    摘要: We report a phase-resolved spectral analysis of the anomalous X-ray pulsar RX J170849-400910 using archival data of a BeppoSAX observation conducted on 1999 March 31 -- April 1. Models of a power-law plus one blackbody and a power-law plus two-blackbodies both fit the spectra very well, but most of the flux is attributed to the nonthermal component for the former and to the thermal one for the latter. Photon power indices, blackbody temperatures, and estimated thermal and nonthermal fluxes all vary with phase. The necessity of invoking a power-law component in spectral fitting, even in the case that most of the flux is thermal, poses severe challenges to those models involving only surface thermal emission as the nature of the radiation from anomalous X-ray pulsars.
    URI: http://adsabs.harvard.edu/abs/2002aprm.conf..317C
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/53738
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