//////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1534 SUBJECT: IPN triangulation of GRB020904 DATE: 02/09/04 23:08:22 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses, HETE, and Mars Odyssey GRB teams, I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin, 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, and G. Ricker, J-L Atteia, N. Kawai, D. Lamb, S. Woosley, J. Doty, R. Vanderspek, J. Villasenor, G. Crew, G. Monnelly, N. Butler, J.G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin, J. Braga, R. Manchanda, G. Pizzichini, Y. Shirasaki, C. Graziani, M. Matsuoka, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, T. Donaghy, M. Boer, J-F Olive, and J-P Dezalay, on behalf of the HETE GRB team, report: Ulysses, Mars Odyssey-HEND, Mars Odyssey-GRS, and HETE-FREGATE observed this GRB at 24827 seconds. As observed by Ulysses, it had a duration of approximately 15 seconds, a 25-100 keV fluence of approximately 5.1E-06 erg/cm2, and a peak flux of approximately 5.1E-07 erg/cm2 s over 0.50 seconds. The burst arrival direction was very close to that of the Ulysses/MO vector, resulting in one very wide annulus (~112') and two much smaller ones (~6' and 8'). The result is two alternate, preliminary, 3 sigma error boxes each with approximate areas 500 square arcminutes each whose coordinates are: RA(2000) DEC(2000) ERROR BOX CENTER: 0 h 44 m 28.95 s -68 o 57 ' 38.48 " ERROR BOX CORNER 1: 0 h 35 m 20.77 s -69 o 33 ' 50.43 " ERROR BOX CORNER 2: 0 h 53 m 07.86 s -68 o 17 ' 23.34 " ERROR BOX CORNER 3: 0 h 35 m 06.37 s -69 o 32 ' 58.52 " ERROR BOX CORNER 4: 0 h 53 m 37.28 s -68 o 18 ' 22.10 " ERROR BOX CORNER 5: 0 h 43 m 27.01 s -69 o 06 ' 33.49 " ERROR BOX CORNER 6: 0 h 45 m 32.84 s -68 o 48 ' 28.17 " OR ERROR BOX CENTER: 1 h 41 m 58.08 s -62 o 7 ' 29.68 " ERROR BOX CORNER 7: 1 h 46 m 11.24 s -61 o 14 ' 55.49 " ERROR BOX CORNER 8: 1 h 37 m 09.77 s -62 o 59 ' 57.38 " ERROR BOX CORNER 9: 1 h 46 m 02.94 s -61 o 13 ' 46.22 " ERROR BOX CORNER 10: 1 h 37 m 21.91 s -63 o 02 ' 29.96 " ERROR BOX CORNER 11: 1 h 43 m 07.30 s -62 o 00 ' 49.41 " ERROR BOX CORNER 12: 1 h 40 m 46.66 s -62 o 14 ' 24.57 " There is a chance that the ambiguity can be resolved by further processing, if Konus or RHESSI observed this event; Konus data are scheduled to be downlinked around 0500 UT on Thursday September 5. Maps will be posted shortly at ssl.berkeley.edu/ipn3/020904. However, viewer discretion is advised; they aren't pretty. These error boxes may be improved. A GCN socket message has been issued with two larger, four-cornered error boxes, due to the format of those message. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1538 SUBJECT: Single IPN error box for GRB020904 DATE: 02/09/06 16:31:47 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses, HETE, and Mars Odyssey GRB teams, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin, 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, and G. Ricker, J-L Atteia, N. Kawai, D. Lamb, S. Woosley, J. Doty, R. Vanderspek, J. Villasenor, G. Crew, G. Monnelly, N. Butler, J.G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin, J. Braga, R. Manchanda, G. Pizzichini, Y. Shirasaki, C. Graziani, M. Matsuoka, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, T. Donaghy, M. Boer, J-F Olive, and J-P Dezalay, on behalf of the HETE GRB team, report: The addition of the Konus data to the triangulation of this burst (GCN 1534) indicates that the first error box is the correct one: RA(2000) DEC(2000) ERROR BOX CENTER: 0 h 44 m 28.95 s -68 o 57 ' 38.48 " ERROR BOX CORNER 1: 0 h 35 m 20.77 s -69 o 33 ' 50.43 " ERROR BOX CORNER 2: 0 h 53 m 07.86 s -68 o 17 ' 23.34 " ERROR BOX CORNER 3: 0 h 35 m 06.37 s -69 o 32 ' 58.52 " ERROR BOX CORNER 4: 0 h 53 m 37.28 s -68 o 18 ' 22.10 " ERROR BOX CORNER 5: 0 h 43 m 27.01 s -69 o 06 ' 33.49 " ERROR BOX CORNER 6: 0 h 45 m 32.84 s -68 o 48 ' 28.17 "