GCN Circular 3161

L. Angelini (GSFC), J. L. Racusin, S. Hunsberger, D. N. Burrows, J. E.
Hill, J. A. Kennea, D. C. Morris, D. Grupe, J. A. Nousek (PSU), J. P.
Osborne, K. L. Page, M. R. Goad, A. P. Beardmore, O. Godet, A. F. Abbey, A.
A. Wells (U. Leicester), S. Campana, A. Moretti, C. Pagani,  P. Romano, G.
Tagliaferri, G. Chincarini (INAF-OAB), G. Cusumano, V. La Parola, V.
Mangano, T. Mineo (INAF-IASF/Palermo), P. Giommi, M. Capalbi, M. Perri, F.
Tamburelli (ASDC), F. Marshall, N. White, N. Gehrels (GSFC), P. Roming, P.
Meszaros (PSU), P. Schady (MSSL), report on behalf of the Swift XRT team:

The Swift BAT instrument triggered on GRB050401 at 14:20:15 UT and Swift 
executed a prompt slew (delayed by 9 seconds due to an Earth constraint) 
.  The XRT found a bright source located at the following position (based 
on 38 counts in 2.5 seconds):

RA(J2000) = +16h 31m 29s,
Dec(J2000) = +02d 11' 14"

We estimate an uncertainty of about 6 arcseconds.   This source is located
42 arcseconds from the BAT position.

We note that Swift had a solid attitude solution during this observation.

The XRT reported a prompt raw spectrum that peaks at about 1 keV with a 
roughly power-law shape (based on 328 s of data in Windowed Timing mode).