[vsnet-grb-info 1825] GRB050724: a short-burst detected by Swift

Sun Jul 24 22:36:22 JST 2005

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3665
SUBJECT: GRB050724: a short-burst detected by Swift
DATE:    05/07/24 13:34:04 GMT
FROM:    Stefano Covino at Brera Astronomical Observatory  <covino at merate.mi.astro.it>

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S. Covino (INAF/OAB), L.A. Antonelli (INAF/OAR), P. Romano (INAF/OAB),
D. Palmer (LANL), C. Markwardt(GSFC, UMd), D. Burrows (PSU), N. Gehrels
(GSFC), S. Barthelmy (GSFC), M. Chester (PSU), S. Hunsberger (PSU), J.
Cummings (GSFC/NRC) on behalf of the Swift team

At 12:34:09 UT, Swift-BAT triggered and located GRB050724
(trigger=147478). The spacecraft slewed immediately. The BAT on-board
calculated location is RA,Dec 246.214, -27.524 {+16h 24m 51s, -27d 31'
25"} (J2000), with an uncertainty of 3 arcmin (radius, 90% containment,
stat+sys). The light curve appears to be short, with full-width half
maximum of less than 0.25 sec, and a peak rate of 10,000 ct/s in that
interval.

The XRT started the observation at 12:35:22.9  UT with XRT in automatic
state, 74 sec after the BAT Trigger. A rapidly fading, uncatalogued, X-
ray source was detected at the following position RA, Dec 16h 24m 44.9s,
-27d 32' 34.0" with an uncertainty of about 6 arcsec (90% containment).
This is 1.78 arcmin from the BAT position reported above.

This message can be cited.

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S. Covino (INAF/OAB), L.A. Antonelli (INAF/OAR), P. Romano (INAF/OAB), D. Palmer (LANL), C. Markwardt(GSFC, UMd), D. Burrows (PSU), N. Gehrels (GSFC), S. Barthelmy (GSFC), M. Chester (PSU), S. Hunsberger (PSU), J. Cummings (GSFC/NRC) on behalf of the Swift team 
 
 
At 12:34:09 UT, Swift-BAT triggered and located GRB050724 (trigger=147478). The spacecraft slewed immediately. The BAT on-board calculated location is RA,Dec 246.214, -27.524 {+16h 24m 51s, -27d 31' 25&quot;} (J2000), with an uncertainty of 3 arcmin (radius, 90% containment, stat+sys). The light curve appears to be short, with full-width half maximum of less than 0.25 sec, and a peak rate of 10,000 ct/s in that interval. 
 
The XRT started the observation at 12:35:22.9&nbsp; UT with XRT in automatic state, 74 sec after the BAT Trigger. A rapidly fading, uncatalogued, X-ray source was detected at the following position RA, Dec 16h 24m 44.9s, -27d 32' 34.0&quot; with an uncertainty of about 6 arcsec (90% containment). This is 1.78 arcmin from the BAT position reported above. 
 
This message can be cited. 
 
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