Nova V2491 Cyg has become a bright super-soft source
Abstract
Continued monitoring of nova V2491 Cyg by the Swift X-ray Telescope has revealed the rapid emergence of a bright soft X-ray component. In addition a Suzaku observation shows that strong low energy X-ray emission lines have been present. Recent Swift observations from day 36 after outburst (May 16) show a very strongly increasing XRT count rate, reaching ~5 c/sec on day 38. This factor of ten flux increase in approximately two days is in stark contrast to the prior increase by this factor which took 18 days (see ATel #1523).
- Publication:
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The Astronomer's Telegram
- Pub Date:
- May 2008
- Bibcode:
- 2008ATel.1542....1O
- Keywords:
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- X-ray;
- Novae