TITLE:   GCN CIRCULAR
NUMBER:  2529
SUBJECT: GRB 031203 XMM-Newton observation
DATE:    04/02/23 21:13:36 GMT
FROM:    Norbert Schartel at XMM-Newton/ESA  <too@xmm.vilspa.esa.es>

Michel G. Breitfellner, Puri Munuera and Alberto Martos report:

Quick-Look-Analysis of the XMM-Newton observation of the
GRB040223 field (D. Gotz et al. GCN 2525), based on
7 ks exposures in the EPIC pn and MOS cameras,
respectively, shows the presence of a source within the
INTEGRAL error circle.

XMMU J163929.9-415601 (J2000):
R.A. = 16h 39m 29.9s  Decl. = -41deg 56'  1.4"
with an estimated EPIC/pn count rate of 0.002 [counts/sec];

At this stage of reduction the position error is expected to
be less than 6".