X-ray and UV observations of nova V598 Puppis between 147 and 255 days after outburst

Details X-ray and UV observations of nova V598 Puppis between 147 and 255 days after outburst X-ray and UV observations of nova V598 Puppis between 147 and 255 days after outburst

2009-09-09

arxiv.org/abs/0909.1670v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

6 pages, 5 figures, accepted for publication in A&A

Scientific paper

Aims: The launch of Swift has allowed many more novae to be observed regularly over the X-ray band. Such X-ray observations of novae can reveal ejecta shocks and the nuclear burning white dwarf, allowing estimates to be made of the ejecta velocity. Methods: We analyse XMM-Newton and Swift X-ray and UV observations of the nova V598 Pup, which was initially discovered in the XMM-Newton slew survey. These data were obtained between 147 and 255 days after the nova outburst, and are compared with the earlier, brighter slew detection. Results: The X-ray spectrum consists of a super-soft source, with the soft emission becoming hotter and much fainter between days ~147 and ~172 after the outburst, and a more slowly declining optically thin component, formed by shocks with kT ~ 200-800 eV (corresponding to velocities of 400-800 km s^-1). The main super-soft phase had a duration of less than 130 days. The Reflection Grating Spectrometer data show evidence of emission lines consistent with optically thin emission of kT ~100 eV and place a limit on the density of the surrounding medium of log(n_e/cm^-3) < 10.4 at the 90 % level. The UV emission is variable over short timescales and fades by at least one magnitude (at lambda ~ 2246-2600 angstrom) between days 169 and 255.

Affiliated with

Also associated with

No associations

Rating

X-ray and UV observations of nova V598 Puppis between 147 and 255 days after outburst 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 and UV observations of nova V598 Puppis between 147 and 255 days after outburst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray and UV observations of nova V598 Puppis between 147 and 255 days after outburst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-385892