//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 14997 SUBJECT: GRB 130708A found in ground analysis of Swift-BAT data DATE: 13/07/09 14:57:45 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift J. R. Cummings reports on behalf of the Swift-BAT team At 11:43:03.7 Swift-BAT triggered on GRB 130708A (trigger 560515). No significant source was found onboard, and rate-trigger processing was terminated prematurely by a pre-planned slew. A significant source was found in ground analysis at RA, Dec 17.474, 0.003, which is: RA (J2000) 01h 09m 53.7s Dec (J2000) 00d 00' 11.9" with an estimated 90% error radius of 2.4 arcmin. This position is 5.0 degrees from the location found by Fermi-GBM for trigger 394976587, which has an estimated error of 2.2 degrees. The partial coding was 11%. We note that this position is 1.6 arcmin from a Seyfert I galaxy at Z = 0.16, [VV2003c] J010946.5-000023. The BAT lightcurve shows a double-peaked long GRB. The T90 of the GRB was about 9 +/- 1 seconds, with a spectral power-law index of 1.38 +/- 0.28 and a fluence of (7.8 +/- 1.8) x 10^-6 ergs/cm^2 in the 15-150 keV BAT energy range. Error estimates are 90% confidence. A Swift TOO request has been approved to locate the afterglow with XRT. Since this burst was not located onboard, the usual automated analysis products are not available. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 14999 SUBJECT: GRB 130708A: Fermi GBM observation DATE: 13/07/10 11:23:35 GMT FROM: Gerard Fitzpatrick at UCD G. Fitzpatrick (UCD) reports on behalf of the Fermi GBM Team: At 11:43:04.27 UT on 08 July 2013, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 130708A (trigger 394976587/130708488) which was also detected by the Swift/BAT (Cummings et al., GCN Circ. 14997). The GBM on-ground location is consistent with the Swift position. The GBM light curve consists of a single peak with a duration (T90) of about 14 s (50-300 keV). The time-averaged spectrum from T0 s to T0 + 8 s is adequately fit by a power law function with an exponential high-energy cutoff. The power law index is -0.9 +/- 0.1 and the cutoff energy, parameterized as Epeak, is 158 +/- 16 keV The event fluence (10-1000 keV) in this time interval is (2.3 +/- 0.1)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+5.8 s in the 10-1000 keV band is 1.0 +/- 0.07 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15001 SUBJECT: GRB 130708A: Swift XRT and UVOT Observations DATE: 13/07/10 20:07:37 GMT FROM: Alessandro Maselli at INAF/IASF Palermo A. Maselli (INAF-IASF Palermo) and A. Breeveld (MSSL-UCL) report on behalf of the Swift XRT and UVOT teams: The Swift/XRT started observing the field of the BAT ground-detected GRB 130708A (Cummings, GCN Circ. 14997) on 2013-07-09 at 14:49:07 UT, 97564 s after the BAT trigger. In 3881 s of XRT data in Photon Counting mode we detected no significant X-ray source within the BAT error circle. The 3-sigma upper limit at the reported BAT position is 4.0E-03 cts/s. The Swift/UVOT began settled observations of the field of GRB 130708A 97557 s after the BAT trigger. No optical afterglow consistent with the BAT position is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white 97741 107968 1001 >21.6 v 97926 103874 1037 >20.1 u 97557 107909 1804 >21.4 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998). This circular is an official product of the Swift XRT and UVOT teams.