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Title
Japanese: 
English:Time-resolved X-Ray Spectral Modeling of an Intermediate Burst from SGR 1900+14 Observed by HETE-2 FREGATE and WXM 
Author
Japanese: Olive, J.-F., Hurley, K., Sakamoto, T., Atteia, J.-L., Crew, G., Ricker, G., Pizzichini, G., Barraud, C., 河合 誠之.  
English: Olive, J.-F., Hurley, K., Sakamoto, T., Atteia, J.-L., Crew, G., Ricker, G., Pizzichini, G., Barraud, C., Kawai, N..  
Language English 
Journal/Book name
Japanese: 
English:Astrophysical Journal 
Volume, Number, Page Vol. 616        pp. 1148-1158
Published date Dec. 2004 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1086/424957
Abstract We present a detailed analysis of a 3.5 s long burst from SGR 1900+14 that occurred on 2001 July 2. The 2-150 keV time-integrated energy spectrum is well described by the sum of two blackbodies whose temperatures are approximately 4.3 and 9.8 keV. The time-resolved energy spectra are similarly well fitted by the sum of two blackbodies. The higher temperature blackbody evolves with time in a manner consistent with a shrinking emitting surface. The interpretation of these results in the context of the magnetar model suggests that the two-blackbody fit is an approximation of an absorbed, multitemperature spectrum expected on theoretical grounds rather than a physical description of the emission. If this is indeed the case, our data provide further evidence for a strong magnetic field and indicate that the entire neutron star was radiating during most of the burst duration.

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