TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2910
SUBJECT: GRB 041223: XRT afterglow spectrum and light curve
DATE:    04/12/25 02:02:16 GMT
FROM:    Daniele Malesani at SISSA-ISAS,Trieste,Italy  <malesani@sissa.it>

G. Tagliaferri, A. Moretti, P. Romano, D. Malesani, G. Chincarini, S. 
Campana, C. Pagani (OAB), D.N. Burrows, J.E. Hill, J. Racusin, J. 
Kennea, D. Morris, J.A. Nousek (PSU), A. Wells, J. Osborne, A. 
Beardmore, K. Page (U. Leicester), P. Giommi (ASI), M. Chester (PSU), L. 
Angelini, S. Barthelmy, N. Gehrels, N. White (GSFC), K. Mason (MSSL), on 
behalf of the Swift XRT team, report:

We have posted online the results of the analysis of the X-ray afterglow 
of GRB 041223 (Tueller et al., GCN 2898; Burrows et al., GCN 2901). 
Plots displaying the lightcurve and the spectrum can be seen at

http://www.merate.mi.astro.it/~taglia/GRB041223

At the same page, a finding chart for the afterglow is also shown, 
reporting a refined X-ray position obtained after running the XRT 
pipeline processing software. The coordinates are

R.A. =  06:40:47.4
Dec. = -37:04:22.3

This position is just 1.5" far from the optical/NIR afterglow (Berger et 
al., GCN 2902; Malesani et al., GCN 2903).

This message can be cited.