TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3059
SUBJECT: INTEGRAL detection of GRB 050223
DATE:    05/02/23 13:44:54 GMT
FROM:    Sandro Mereghetti at IASF/CNR  <sandro@mi.iasf.cnr.it>

S. Mereghetti, D. Gotz (IASF, Milano), N. Mowlavi, S. Shaw, M. Beck
(ISDC, Versoix) and J. Borkowski (CAMK, Torun) on behalf of the IBAS
Localization Team report:


GRB 050223, discovered by Swift (Giommi et al. GCN 3054, Mitani et al.
GCN 3055), has been also detected by the IBIS/ISGRI instrument on board
INTEGRAL.

The burst occurred during a 200 sec long time interval in which the
automatic distribution of IBAS Alerts was disabled due to the temporary
switch-off of one of the 8 modules of the IBIS/ISGRI detector.

The GRB coordinates (J2000) derived from an off-line analysis are:

RA:   271.4002 [degrees]
DEC:  -62.4739 [degrees]

with an uncertainty of 3 arcmin (90% c.l. radius).

The peak flux measured with IBIS/ISGRI is 0.6 ph/cmsq/s (20-200 keV, 1 s
integration time).

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