Swift detection of super soft X-ray emission in Nova V2468 Cygni

Details Swift detection of super soft X-ray emission in Nova V2468 Cygni Swift detection of super soft X-ray emission in Nova V2468 Cygni

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3754....1s&link_type=abstract

The Astronomer's Telegram, #3754

Astronomy and Astrophysics

Astronomy

Ultra-Violet, X-Ray, Nova

Scientific paper

Swift observed V2468 Cyg on August 8, October 3, and October 21, 2011. The combined X-ray (0.3-10 keV) count rate, ~ 0.015 ± 0.001 ct/s, was fainter to that observed in campaigns in June-October 2009 (ATel #2157) and May 2010, however, the X-ray spectrum has changed significantly. Previously, all the spectra had both hard and soft components of roughly equal intensity. The recent spectra are now dominated by soft, < 1 keV, photons indicating that V2468 Cyg is in its super soft source phase; the (1-10/0.3-1) keV count rate hardness ratio has changed from >1 to <0.01.

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