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The origin of soft x-rays in dq herculis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Still, M. Ringwald, F. A. White, Nicholas E. Technical Monitor Mukai, K. |
| Copyright Year | 2002 |
| Description | DQ 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. |
| File Size | 954671 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030022761 |
| Archival Resource Key | ark:/13960/t8vb33h1s |
| Language | English |
| Publisher Date | 2002-10-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Rosat Mission Point Sources Cataclysmic Variables White Dwarf Stars Hercules Nova Magnetic Stars X Ray Astrophysics Facility Accretion Disks Line of Sight X Ray Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
