| Type |
Conference Paper |
| Names |
Thomas Nelson, Thomas Nelson, Koji Mukai, Marina Orio, Juan Luna, Jeno Sokoloski |
| Conference Name |
Chandra's First Decade of Discovery |
| Pages |
167 |
| Date |
September 1, 2009 |
| URL |
http://adsabs.harvard.edu/abs/2009cfdd.confE.167N |
| Library Catalog |
NASA ADS |
| Abstract |
We present Chandra and XMM-Newton observations of the recurrent nova RS
Ophiuchi (RS Oph) carried out 1.5 and 2 years after the 2006 outburst.
The observed X-ray emission is faint (L_{x} < 10^{32} erg s^{-1}) and
dominated by soft emission at energies <2 keV. This component is well
described by a two temperature plasma model with non-solar abundances
consistent with those derived by Ness et al. (2009) from high resolution
spectra obtained during outburst. A faint hard component is also
detected, and is consistent with a cooling flow typical of accreting
white dwarfs, although with a low maximum temperature and implied
accretion rate. We discuss the physical mechanisms that are likely
responsible for these emission components. We find evidence of high
intrinsic absorption in the system which may resolve the apparent
contradiction between the low observed X-ray luminosity and the high
mass accretion rate onto the white dwarf required to power a nova
outburst every ˜20 yrs. |
| Tags |
Compact Objects |