Large amplitude variability and detection of a 35 sec modulation of the soft X-ray flux of nova KT Eri by Swift

Details Large amplitude variability and detection of a 35 sec modulation of the soft X-ray flux of nova KT Eri by Swift Large amplitude variability and detection of a 35 sec modulation of the soft X-ray flux of nova KT Eri by Swift

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2423....1b&link_type=abstract

The Astronomer's Telegram, #2423

Astronomy and Astrophysics

Astronomy

4

Binaries, Cataclysmic Variables, Novae

Scientific paper

Swift X-ray Telescope (XRT) observations of Nova Eri 2009 (KT Eri) show that the supersoft source (SSS) reported by Bode et al (ATel #2392) first increased, and then decreased in variability. The 0.3-1 keV count rate showed >500x variations on a timescale of ~1.5 days, from <0.1 c/s to ~70 c/s between days 66 to 68.5 from the time of peak optical brightness (2009 Nov 14.632). After day 69.4 the variation became less dramatic, with the count rate varying between about 5 and 150 c/s, until after day 77.2 where the source has remained almost consistently above ~100 c/s.

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