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GCN Circular 3241

GRB 050412: Swift XRT Position
2005-04-12T11:38:26Z (19 years ago)
Jamie A. Kennea at PSU/Swift-XRT <>
F. Tamburelli, P. Giommi, M. Capalbi, M. Perri (ASDC), J. Kennea, D. N. 
Burrows, J. A. Nousek, M. Chester (PSU), V. Mangano, T. Mineo (IASF/Palermo), 
A. F. Abbey, P. T. O'Brien (U. Leicester), A. Moretti, G. Tagliaferri (OAB), L. 
Angelini, F. Marshall, and N. Gehrels (NASA/GSFC)  report on behalf of the 
Swift XRT team:

The Swift BAT instrument detected a GRB at 05:44:03 UT on 12th April 2005 
(GCN Circ 3237). The observatory executed an automated slew to the BAT 
position and the XRT began taking data at 05:45:42 UT.  The XRT was in 
Auto state but was not able to centroid on the afterglow due to low source 
brightness. From downlinked data we find a uncataloged X-ray source 
located at:

RA(J2000) = 12:04:25.3,
Dec(J2000) = -1:12:02.2.

We estimate an uncertainty of about 5 arcseconds radius (90% containment). 
This position is 191 arcseconds from the BAT position reported in GCN 

[GCN_OPS_NOTE (12apr05):  Per author's request, the "050406" in the Subject line
was changed to "050412".]
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