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GCN Circular 2261

Subject
GRB030528(=H2724): Revised SXC Localization
Date
2003-05-31T23:04:24Z (20 years ago)
From
George Ricker at MIT <grr@space.mit.edu>
GRB030528(=H2724): Revised SXC Localization

J. Villasenor, N. Butler, G. Crew, J. Doty, G. Prigozhin, R. 
Vanderspek, T. Cline, J. G. Jernigan, A. Levine, F. Martel, E. 
Morgan, G. Monnelly, G. Azzibrouck, J. Braga, R. Manchanda, and G. 
Pizzichini, on behalf of the HETE Operations and HETE Optical-SXC 
Teams;

G. Ricker, J-L Atteia, N. Kawai, D. Lamb, and S. Woosley on behalf of 
the HETE Science Team;

C. Barraud, M. Boer, J-F Olive, J-P Dezalay, and K. Hurley on behalf 
of the HETE FREGATE Team;

K. Torii, C. Graziani, Y. Shirasaki, T. Donaghy, M. Matsuoka, M. 
Suzuki, T. Tamagawa, T. Sakamoto, A. Yoshida, E. Fenimore, M. 
Galassi, Y. Nakagawa, R. Satoh, Y. Urata, T. Yamazaki and Y. 
Yamamoto, on behalf of the HETE WXM Team;

write:

Further analysis of the spacecraft aspect data near the time of 
GRB030528 indicates that an additional systematic correction to the 
HETE SXC localization reported in GCN2256 (Atteia et al) is required. 
This analysis uses the known position of Sco X-1, which was within 
the SXC field-of-view at the time of GRB030528. We conclude that a 
best estimate location for GRB030528 is:

RA (J2000) = 17h 03m 58s,	Dec (J2000) = -22d 38m 00s

with an error radius of 2.5 arcminutes. This revised location is 
displaced by 1.3 arcmin from the one reported in GCN2256.

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