| タイトル | Revisit to the RXTE and ASCA Data for GRO J1655-40: Effects of Radiative Transfer in Corona and Color Hardening in the Disk |
| 本文（外部サイト） | http://hdl.handle.net/2060/20010000322 |
| 著者（英） | Harmon, B. A.; Xu, Haiguang; Yao, Yangsen; Zhang, Xiaoling; Chen, Wan; Sun, Xuejun; Robinson, C. R.; Wu, Xuebing; Zhang, S. Nan; Cui, Wei |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1999-01-01 |
| 言語 | eng |
| 内容記述 | The results of spectral modeling of the data for a series of RXTE observations and four ASCA observations of GRO J1655-40 are presented. The thermal Comptonization model is used instead of the power-law model for the hard component of the two-component continuum spectra. The previously reported dramatic variations of the apparent inner disk radius of GRO J1655-40 during its outburst may be due to the inverse Compton scattering in the hot corona. A procedure is developed for making the radiative transfer correction to the fitting parameters from RXTE data and a more stable inner disk radius is obtained. A practical process of determining the color correction (hardening) factor from observational data is proposed and applied to the four ASCA observations of GRO J1655-40. We found that the color correction factor may vary significantly between different observations and the finally corrected physical inner disk radius remains reasonably stable over a large range of luminosity and spectral states. |
| NASA分類 | Solar Physics |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/93720 |
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