Model | Parameters |
PLAbs. | ; |
(A) | |
PL+Thermal (bbody) | ; ; |
Abs. | kT=.14^{+0.01}_{-0.02}; |
(B) | ; |
; | |
PL+Thermal (diskbb) | ; ; |
Abs. | ; |
(C) | |
; | |
PL+Thermal (mekal) | ; ; |
Abs. | kT=.22^{+0.02}_{-0.02}; Z=1.0; |
(D) | ; |
; | |
PL+Thermal (mekal+ | ; ; |
bbody) Abs. | ; Z=1.0; |
(E) | ; |
; | |
; | |
; | |
Fit parameters are shown with 90% errors ( ). The model and parameter definitions are: model components - PL: power-law with a photon index of and a 0.5-2 keV flux of in units of 10^{-12} erg cm^{-2} s^{-1}. Thermal - thin plasma: thermal plasma using the XSPEC mekal model with a plasma temperature kT [keV], a metal abundance Z=1 in solar units, and the normalization defined by XSPEC . Thermal - multi color disk: the multicolor disk (Mitsuda et al. 1984) distributed as the XSPEC model (diskbb) with an inner disk temperature and with an normalization defined as , where is the inner disk radius and D is the distance to the source in 10 kpc units, and is the viewing angle of the disk axis. Thermal - thick plasma: thermal thick plasma using the XSPEC bbody model with a plasma temperature kT [keV], with a normalization defined as L_{39}/ D^{2}_{10}, where L_{39} is the source luminosity in units of 10^{39} erg s^{-1} and D_{10} is the distance to the source in units of 10 kpc. Abs: absorption by neutral gas using the XSPEC model wabs (Morrison R. McCammon D. 1983, ApJ 270 190) with hydrogen column density . |