Swift sees a return to quiescence in XMMSL1 J162940.2-112024: A possible massive stellar flare?

Details Swift sees a return to quiescence in XMMSL1 J162940.2-112024: A possible massive stellar flare? Swift sees a return to quiescence in XMMSL1 J162940.2-112024: A possible massive stellar flare?

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1718....1r&link_type=abstract

The Astronomer's Telegram, #1718

Astronomy and Astrophysics

Astronomy

1

X-Ray, Request For Observations, Transients, Stars

Scientific paper

XMMSL1 J162940.2-112024, a bright new X-ray transient discovered on Aug 20, 2008 by XMM-Newton in its Slew Survey mode [ATel #1689] has been observed by Swift for ~1.3 ksec on Sep 5, 2008. No significant emission is seen at the slew source position (RA:16 29 40.2, DEC:-11 20 24; err. 8''). A 2 sigma upper limit to the Swift-XRT (0.2-10 keV) count rate was calculated at <3.2e-3 ct/s. The optical and IR magnitudes of the brighter, and closer, of the two catalogued optical sources within the slew error circle, USNO-B1.0 0786-0301344, are consistent with a star of effective temperature 3600K and bolometric luminosity 6e-5 L(solar).

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