TITLE: GCN CIRCULAR NUMBER: 6776 SUBJECT: IPN search for a GRB associated with TAROT transient on August 31 DATE: 07/09/10 18:03:04 GMT FROM: Kevin Hurley at UCBerkeley/SSL 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.