Swift observations of an outburst in XTE J1739-302/IGR J17391-3021

Details Swift observations of an outburst in XTE J1739-302/IGR J17391-3021 Swift observations of an outburst in XTE J1739-302/IGR J17391-3021

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3182....1r&link_type=abstract

The Astronomer's Telegram, #3182

Astronomy and Astrophysics

Astronomy

X-Ray, Binary, Transient

Scientific paper

On 2011 February 22 at 07:21:37 UT, the Swift Burst Alert Telescope (BAT) triggered (image trigger=446475) on the supergiant fast X-ray transient XTE J1739-302/IGR J17391-3021 (Smith et al. 1998, ApJ 501, L101). Swift immediately slewed to the target, so that the narrow-field instruments began observing the field 141 s after the BAT trigger. Using the BAT data from T-79 to T+167 s, the mask-weighted lightcurve shows the burst to have started at about T-70 sec (possibly sooner) with a slow rise and continuing emission out past the current of the downlinked data at T+167 s.

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