GCN Circular 2474

P. Rodriguez-Pascual, M. Santos-Lleo, R. Gonzalez-Riestra,

N. Schartel, B. Altieri report:


Preliminary analysis of the XMM-Newton raw data of
the GRB031203 field (D. Gotz et al. GCN 2459
Not found
 
 
), based
on the fully accumulated 56.3 ks exposure time in the
EPIC pn camera, confirms the two sources reported by
M. Santos-Lleo and P. Calderon (GCN 2464
Not found
 
 
). The
observation was performed under optimal environmental
conditions and is basically free from solar background
flares.


XMMU J080230.3-395101, (S1 in GCN 2464
Not found
 
 
) shows a decrease
of the pn count rate from approximately 0.075 counts/sec
(at start of observation) to approximately 0.05
counts/sec (at end of observation) within an extraction
radius of 30 arcsec.
There are very few counts in low-energy channels
(below approximately 0.9 keV) which may be explained
by the Galactic absorption.


XMMU J080220.8-395213 (S2 in GCN 2464
Not found
 
 
) might also show
evidence for a decrease in flux, but the current
processing status of the data does not allow proper
quantification.


In addition to the two sources reported in GCN 2464
Not found
 
 

several weaker sources are visible in the data taken
during the 56.3 ks exposure time. The following sources
are located in the INTEGRAL error circle:


XMM-Newton Source       counts          distance   in
                                         to centre  GCN
                         [1/sec]         [arcsec]   2464
-----------------------------------------------------
XMMU J080230.3-395101   0.057+/-0.0012   13         S1
XMMU J080220.8-395213   0.018+/-0.001   135         S2
XMMU J080226.0-394955   0.003+/-0.001    69
XMMU J080230.7-395239   0.002+/-0.001   110
XMMU J080233.4-395150   0.003+/-0.001    73
XMMU J080238.2-395150   0.001+/-0.0007  112
XMMU J080239.4-395052   0.002+/-0.001   108
-----------------------------------------------------

The following sources fall on the border of the INTEGRAL
error circle:

XMM-Newton Source       counts          distance
                                         to centre
                         [1/sec]         [arcsec]
------------------------------------------------
XMMU J080234.3-394839   0.003+/-0.001   137
XMMU J080241.7-394944   0.002+/-0.001   149
------------------------------------------------

The following source falls just outside the INTEGRAL
error circle:

XMM-Newton Source       counts          distance
                                         to centre
                         [1/sec]         [arcsec]
------------------------------------------------
XMMU J080226.6-395334   0.003+/-0.001   170
------------------------------------------------

At this stage of the data processing the position error
for the weaker sources is of the order of 10 arcsec.

The XMM-Newton Science Operations Centre plans to
make preliminary images available on a dedicated web
page by the middle of next week.

[GCN OPS NOTE (06dec03): The extra blank line between ever line
in this text have been removed -- they were due to an artifact
in the mailer program in the original submission.]