//////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1854 SUBJECT: IPN triangulation of GRB030204 (small error box) DATE: 03/02/04 19:34:03 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, A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS 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 & GRS), INTEGRAL (SPI-ACS) and HETE (FREGATE) observed this burst at 45930 s. As observed by Ulysses, it had a duration of approximately 100 seconds, a 25-100 keV fluence of approximately 2.2E-05 erg/cm2, and a peak flux of approximately 1.1E-06 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary, 3 sigma error box whose approximate area is 73 sq. arcmin. and whose coordinates are: RA(2000) DEC(2000) ERROR BOX CENTER: 0 h 3 m 20.47 s 32 o 43 ' 36.92 " ERROR BOX CORNER 1: 0 h 3 m 30.06 s 32 o 45 ' 45.55 " ERROR BOX CORNER 2: 0 h 4 m 26.15 s 32 o 40 ' 18.06 " ERROR BOX CORNER 3: 0 h 2 m 14.87 s 32 o 46 ' 52.49 " ERROR BOX CORNER 4: 0 h 3 m 10.89 s 32 o 41 ' 28.22 " This error box may be improved. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1855 SUBJECT: GRB 030204, optical observations DATE: 03/02/05 00:44:29 GMT FROM: Alberto Castro-Tirado at LAEFF-INTA V. Casanova, E. Rodriguez, A.J. Castro-Tirado (IAA-CSIC), J. Gorosabel (IAA-CSIC/STScI), J. M. Castro Ceron (STScI) report: "We have imaged a 7' x 7' region centred on the error box for GRB 020304 (Hurley et al., GCN 1854) with the 1.5-m telescope at Observatorio de Sierra Nevada in Granada, Spain. One unfiltred frame and one R-band frame (300-s exposure time each) were obtained on Feb 4.879 UT (i.e. 8.3 hours after the GRB) under poor meteorological conditions. When comparing to the DSS-2 (R-band), no optical counterpart is found down to a limiting magnitude of R = 19.7 in the central region (coverage ~35%) of the error box." //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1860 SUBJECT: GRB030204 field photometry DATE: 03/02/07 14:59:43 GMT FROM: Arne A. Henden at USNO/USRA A. Henden (USRA/USNO) reports on behalf of the USNO GRB team: We have acquired BVRcIc all-sky photometry for a 20x20 arcmin field covering the eastern two thirds of the IPN error box for GRB030204 (Hurley, et. al GCN 1584) with the USNOFS 1.0-m telescope on one photometric night. Stars brighter than V=12.5 are saturated and should be used with care. Conditions were clear but with poor seeing; estimated external zeropoint error is about 0.03mag. We have placed the photometric data on our anonymous ftp site: ftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb030204.dat The astrometry in this file is based on linear plate solutions with respect to UCAC2. The external errors are less than 100mas. We do not anticipate additional nights of photometry on this field since no afterglow has been detected. However, as with all NOFS calibrations, check the dates on the file prior to final publication to ensure that you have the latest photometry. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1861 SUBJECT: GRB 030204: Optical Observations DATE: 03/02/07 18:25:09 GMT FROM: Melissa Nysewander at UNC,Chapel Hill M. Nysewander (U. North Carolina), A. Henden (USRA/USNO), M. Lopez-Morales, D. Reichart (U. North Carolina), and M. Schwartz (Tenagra Observatories) report on behalf of a larger collaboration: We observed the entire ~73 square arcminute error box of GRB 030204 (GCN 1854) beginning 11.5 hours after the burst (GCNs 1856, 1858) in BVRcIc and beginning 38.2 hours after the burst in Rc. Using the field calibration of Henden (GCN 1860), we report the following 3-sigma limiting magnitudes: Date Mean Time Filter Integration Limiting Telescope* Since GRB Time (sec) Magnitude (hours) x Pointings Feb 5.011 11.5 Rc 1500 x 3 20.0 0.6-meter MO Feb 5.042 12.2 Ic 3600 x 1 19.3 0.2-meter PST Feb 5.108 13.8 Rc 900 x 2 21.5 1.0-meter USNO Feb 5.133 14.4 B 480 x 2 22.0 1.0-meter USNO Feb 5.133 14.4 V 300 x 2 21.7 1.0-meter USNO Feb 6.122 38.2 Rc 1800 x 2 22.9 1.0-meter USNO Feb 6.124 38.2 Rc 2700 x 2 21.7 0.8-meter TII *MO = Morehead Observatory telescope; PST = Pisgah Survey Telescope at the Pisgah Astronomical Research Institute (PARI); TII = Tenagra II telescope. Using the image subtraction routine ISIS2 (Alard 2000), we find no transient sources in either of our Rc images of February 4th when compared to either of our Rc images of February 5th. Alard, C. 2000, A&AS 114, 363