The Early X-Ray Emission from V382 Velorum (Nova Velorum 1999): An Internal Shock Model

and

© 2001. The American Astronomical Society. All rights reserved. Printed in U.S.A.
, , Citation Koji Mukai and Manabu Ishida 2001 ApJ 551 1024 DOI 10.1086/320220

0004-637X/551/2/1024

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 strong (1023 cm-2) intrinsic absorption. In the subsequent RXTE data, the spectra became softer, because of both 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 it must have been the result of a shock internal to the nova ejecta. The weakness of the Fe Kα lines probably indicates that the X-ray-emitting plasmas are not in ionization equilibrium.

Export citation and abstract BibTeX RIS

Please wait… references are loading.
10.1086/320220