Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-12-20
Astrophys.J. 622 (2005) 602-612
Astronomy and Astrophysics
Astrophysics
30 pages including 10 figures, accepted for publication in Astrophysical Journal
Scientific paper
10.1086/427915
We report on our Chandra and RXTE observations of the bright old nova, V603 Aql, performed in 2001 April, supplemented by our analysis of archival X-ray data on this object. We find that the RXTE data are contaminated by the Galactic Ridge X-ray emission. After accounting for this effect, we find a high level of aperiodic variability in the RXTE data, at a level consistent with the uncontaminated Chandra data. The Chandra HETG spectrum clearly originates in a multi-temperature plasma. We constrain the possible emission measure distribution of the plasma through a combination of global and local fits. The X-ray luminosity and the spectral shape of V603 Aql resemble those of SS Cyg in transition between quiescence and outburst. The fact that the X-ray flux variability is only weakly energy dependent can be interpreted by supposing that the variability is due to changes in the maximum temperature of the plasma. The plasma density is likely to be high, and the emission region is likely to be compact. Finally, the apparent overabundance of Ne is consistent with V603 Aql being a young system.
Mukai Kazuhiko
Orio Marina
No associations
LandOfFree
X-ray Observations of the Bright Old Nova V603 Aquilae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with X-ray Observations of the Bright Old Nova V603 Aquilae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray Observations of the Bright Old Nova V603 Aquilae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-120704