[vsnet-grb-info 2723] GRB 060121: Swift XRT refined position

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4560
SUBJECT: GRB 060121: Swift XRT refined position
DATE:    06/01/22 12:53:55 GMT
FROM:    Vanessa Mangano at INAF-IASFPA  <vanessa at ifc.inaf.it>

V. Mangano, V. La Parola, T. Mineo (INAF-IASFPA), G. Tagliaferri, P.
Romano (INAF-OAB), P. O'Brien (UL), D.N. Burrows (PSU) on behalf of the
Swift XRT team:

We have analyzed the first 5 ks of XRT data of the Swift ToO observationb of the HETE burst GRB 060116 (M. Arimoto at al. 2006, GCN 4550). The XRT observation started on 2006-01-22 at 01:21:37 UT, 2hr 56min 42.5s after the HETE trigger.

We find a single bright fading source at 

RA(J2000) = 09h 09m 52.13s  
Dec(J2000) = +45d 39m 44.9s

with an uncertainty of 3.7 arcsec (90% containment). This position includes the latest XRT boresight correction. This position is 69 acrsecond from the refined HETE posizion (G. Prigozhin et al. 2006, GCN 4551), well within the HETE error box.