A soft X-ray flare from XMMSL1 J202406.4+260926

Details A soft X-ray flare from XMMSL1 J202406.4+260926 A soft X-ray flare from XMMSL1 J202406.4+260926

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3485....1s&link_type=abstract

The Astronomer's Telegram, #3485

Astronomy and Astrophysics

Astronomy

X-Ray, Request For Observations, Transient

Scientific paper

We report the discovery of a large, 15 ct/s, soft X-ray flux from XMMSL1 J202406.4+260926 in an XMM-Newton slew on May 22nd 2011. The source position, RA:20 24 06.4 DEC:+26 09 26 (1-sigma error radius of 8") has been observed in two earlier slews in 2005 and 2009, without detecting the source (upper limits of 0.8 and 0.7 ct/s respectively). A very faint object, 1RXS J202406.6+260918, is catalogued in the ROSAT ALL-Sky Survey with a count rate of 0.032 c/s, which equates to a flux 60x fainter than that seen on May 22nd.

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