XMM-NEWTON AND CHANDRA LETGS X-RAY SPECTROSCOPY OF SUPERSOFT X-RAY BINARIES

摘要

With current generation X-ray observatories, detailed diagnostics of the high-temperature environment of white dwarf binaries accreting close to the Eddington limit (supersoft X-ray binaries, SSXBs) and of the nuclear burning region on their photospheres have become possible. High-resolution X-ray spectroscopy of SSXBs with the Chandra LETGS and the XMM-Newton RGS has revealed complex absorption and emission line spectra which probably reflect a combination of high-gravity stellar atmospheres, dynamical processes in the atmosphere, patchy absorption structures, X-ray scattering, and coronal-like emission from the wind.