The early X-ray emission from V382 Velorum (=Nova Vel 1999): An internal shock model
Astrophysics
2009-11-06 v1
Abstract
We present the results of ASCA and RXTE observations of the early X-ray emission from the classical nova V382 Velorum. Its ASCA spectrum was hard (kT~10 keV) with a strong (10**23 cm**-2) intrinsic absorption. In the subsequent RXTE data, the spectra became softer both due to a declining temperature and a diminishing column. We argue that this places the X-ray emission interior to the outermost ejecta produced by V382 Vel in 1999, and therefore must have been the result of a shock internal to the nova ejecta. The weakness of the Fe K alpha lines probably indicates that the X-ray emitting plasmas are not in ionization equilibrium.
Cite
@article{arxiv.astro-ph/0101026,
title = {The early X-ray emission from V382 Velorum (=Nova Vel 1999): An internal shock model},
author = {Koji Mukai and Manabu Ishida},
journal= {arXiv preprint arXiv:astro-ph/0101026},
year = {2009}
}
Comments
16 pages (including 4 figures), accepted for publication in ApJ