NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
The Origin of Soft X-rays in DQ HerculisDQ Herculis (Nova Herculis 1934) is a deeply eclipsing cataclysmic variable containing a magnetic white dwarf primary. The accretion disk is thought to block our line of sight to the white dwarf at all orbital phases due to its extreme inclination angle. Nevertheless, soft X-rays were detected from DQ Her with ROSAT PSPC. To probe the origin of these soft X-rays, we have performed Chandra ACIS observations. We confirm that DQ Her is an X-ray source. The bulk of the X-rays are from a point-like source and exhibit a shallow partial eclipse. We interpret this as due to scattering of the unseen central X-ray source, probably in an accretion disk wind. At the same time, we detect weak extended X-ray features around DQ Her, which we interpret as an X-ray emitting knot in the nova shell.
Document ID
20030022761
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
White, Nicholas E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mukai, K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Still, M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ringwald, F. A. (California State Univ. Fresno, CA, United States)
Date Acquired
September 7, 2013
Publication Date
October 1, 2002
Subject Category
Astrophysics
Distribution Limits
Public
Copyright
Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available