The persistent, spectral variable pre-nova X-ray source in V2491 Cyg: Swift J194302.1+321913

Details The persistent, spectral variable pre-nova X-ray source in V2491 Cyg: Swift J194302.1+321913 The persistent, spectral variable pre-nova X-ray source in V2491 Cyg: Swift J194302.1+321913

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1478....1i&link_type=abstract

The Astronomer's Telegram, #1478

Astronomy and Astrophysics

Astronomy

18

X-Ray, Gamma Ray, Binaries, Cataclysmic Variables, Novae, Transients, Variables

Scientific paper

We provide further details on the V2491 Cyg pre-nova X-ray source (ATel #1473). The full designation of the pre-nova XRT source is Swift J194302.1+321913. Below we list all Swift/XRT pre-nova observations, and provide the background corrected count rates in two bands, and the 68% confidence Baysian rate errors (Kraft et al. 1991, ApJ 374, 344) because of the low numbers of counts. The source is variable, and changes dramatically in spectral shape between observations on a time scale down to 4 days.

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