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arXiv · 0704.0734

GRO J1655-40: from ASCA and XMM-Newton Observations

Xiao-Ling Zhang·Shuang Nan Zhang·Gloria Sala·Jochen Greiner·Yuxin Feng·Yangsen Yao
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Abstract

We have analysed four ASCA observations (1994--1995, 1996--1997) and three XMM-Newton observations (2005) of this source, in all of which the source is in high/soft state. We modeled the continuum spectra with relativistic disk model kerrbb, estimated the spin of the central black hole, and constrained the spectral hardening factor f_col and the distance. If kerrbb model applies, for normally used value of f_col, the distance cannot be very small, and f_col changes with observations.

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Xiao-Ling Zhang, Shuang Nan Zhang, Gloria Sala, Jochen Greiner, Yuxin Feng, Yangsen Yao. 2007-04-05. GRO J1655-40: from ASCA and XMM-Newton Observations. https://arxiv.org/abs/0704.0734

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