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GCN Circular 6776

Subject
IPN search for a GRB associated with TAROT transient on August 31
Date
2007-09-10T18:03:04Z (17 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, Mars Odyssey, MESSENGER,
and Konus GRB teams,

I.G. Mitrofanov, M.L. Litvak, A.S. Kozyrev, A.B. Sanin and V.I. Tretyakov,
on behalf of the HEND-Odyssey GRB team,

W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr, on
behalf of the GRS-Odyssey GRB team,

S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, and D. Frederiks,
on behalf of the Konus-Wind team,

D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W.
Hajdas, and A. Zehnder, on behalf of the RHESSI GRB team, 

A. von Kienlin, G. Lichti, and A. Rau, on behalf of the
INTEGRAL SPI-ACS GRB team,

K.Yamaoka, M.Ohno, Y.Fukazawa, T.Takahashi, M.Tashiro, Y. Terada,
T.Murakami, and K.Makishima on behalf of the Suzaku WAM team,

S. Barthelmy, J. Cummings, N. Gehrels, and H. Krimm, on behalf of
the Swift-BAT team,

J. Goldsten, on behalf of the MESSENGER NS GRB team, and

I. Donnarumma, L. Pacciani, F. Fuschino, and M. Marisaldi, 
on behalf of the AGILE Team, 

report:

We have searched the triggered and real-time data of the Odyssey (HEND
and GRS), Konus-Wind, MESSENGER, Suzaku, Swift-BAT, RHESSI, and AGILE
(SuperAGILE and mini-calorimeter) spacecraft for any burst (long- or
short-duration) which might correspond to the TAROT orphan GRB
candidate on August 31 (Klotz et al. GCN 6769).   The search was
concentrated on times up to the time of the first exposure, at 00:20:38
UT. (INTEGRAL SPI-ACS and Ulysses were not returning data during this
period.) Without knowledge of the exact burst time and profile, it is
difficult to completely rule out the existence of any corresponding
event; for example, some spacecraft were planet-blocked for varying
portions of the search window.  However, no bursts of any kind were
observed; a very rough upper limit to the >25 keV fluence of a short duration
burst is 10^-6 erg cm^-2.
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