Nova V2491 Cyg has become a bright super-soft source

Details Nova V2491 Cyg has become a bright super-soft source Nova V2491 Cyg has become a bright super-soft source

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1542....1o&link_type=abstract

The Astronomer's Telegram, #1542

Astronomy and Astrophysics

Astronomy

9

X-Ray, Novae

Scientific paper

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).

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