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GCN Circular 2620

XRF040701 (=U11548): a bright XRF detected by HETE
2004-07-03T15:58:32Z (20 years ago)
Roland Vanderspek at MIT <>
XRF040701 (=U11548):  a bright XRF detected by HETE

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

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

N. Butler, G. Crew, J. Doty, A. Dullighan, G. Prigozhin, R. Vanderspek, 
J. Villasenor, J. G. Jernigan, A. Levine, G. Azzibrouck, J. Braga, 
R. Manchanda, and G. Pizzichini, on behalf of the HETE Operations and 
HETE Optical-SXC Teams; 

M. Boer, J-F Olive, J-P Dezalay, and K. Hurley, on behalf of the HETE 


Post-processing analysis of HETE data has revealed the presence of
XRF 040701, a bright XRF.  The burst was detected at 13:00:55 UT
and had a duration of roughly 60 seconds.  The XRF has been localized 
to a circle of radius 8' centered at 

  RA = 20h 47m 46.3s, dec = -40d 14m 13s (J2000).

Preliminary spectral analysis shows the burst can be best fit with a 
power law of index 2.395 +/- 0.3;  the 2-25 keV energy fluence is 
4.5 +/- 0.8 x 10^-7 erg/cm2.

Details of this burst can be found on the HETE web page at

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