An Apparent Hard X-ray Decline of CH Cygni
Astrophysics
2015-06-24 v1
Abstract
CH Cygni is a symbiotic star consisting of an M giant and an accreting white dwarf, which is known to be a highly variable X-ray source with a complex, two-component, spectra. Here we report on two Suzaku observations of CH Cyg, taken in 2006 January and May, during which the system was seen to be in a soft X-ray bright, hard X-ray faint state. Based on the extraordinary strength of the 6.4 keV fluorescent Fe K-alpha line, we show that the hard X-rays observed with Suzaku are dominated by scattering.
Keywords
Cite
@article{arxiv.astro-ph/0609245,
title = {An Apparent Hard X-ray Decline of CH Cygni},
author = {Koji Mukai and Manabu Ishida and Caroline Kilbourne and Hideyuki Mori and Yukikatsu Terada and Kai-Wing Chan and Yang Soong},
journal= {arXiv preprint arXiv:astro-ph/0609245},
year = {2015}
}
Comments
8 pages, 4 figures, accepted by Publications of the Astronomical Society of Japan