//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 14969 SUBJECT: GRB 130628A: Fermi GBM detection DATE: 13/07/03 11:40:30 GMT FROM: David Byrne at UCD D. Byrne (UCD), C. Meegan (UAH) and M. Burgess (UAH) report on behalf of the Fermi GBM Team: "At 12:44:02.12 UT on 28 June 2013, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 130628A (trigger 394116245/130628531) High peak flux from the GRB caused GBM to issue a repoint request that reoriented the satellite to place the GRB near the LAT boresight for 2.5 hours, subject to Earth limb contraints. The on-ground calculated location, using the GBM trigger data, is RA = 6.29, DEC = -5.07 (J2000 degrees, equivalent to 00 h 25m, -5 d 0'), with an uncertainty of 1.71 degrees (radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). The angle from the Fermi LAT boresight is 67 degrees. The GBM light curve consists of two pulses with a duration (T90) of about 22 s (50-300 keV). The time-averaged spectrum from T0-3.1 s to T0+25.6 s is well fit by a power law function with an exponential high-energy cutoff. The power law index is -1.51 +/- 0.04 and the cutoff energy, parameterized as Epeak, is 128 +/- 11 keV. The event fluence (10-1000 keV) in this time interval is (9.9 +/- 0.3)E-6 erg/cm^2. The 1-sec peak photon flux measured starting from T0+2.8 s in the 10-1000 keV band is 14.5 +/- 0.3 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog." -- David Byrne BSc. School of Physics, Science Center North, University College Dublin, Belfield, Dublin 4, Ireland. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 14995 SUBJECT: GRB 130628A: Suzaku WAM observation of the prompt emission DATE: 13/07/08 11:25:03 GMT FROM: Makoto Tashiro at Saitama U/Swift Y. Ishida, M. Tashiro, Y. Terada, T. Yasuda, H. Ueno, S. Sugimoto (Saitama U.), M. Ohno, K. Takaki, T. Kawano, R. Nakamura, S. Furui, Y. Fukazawa (Hiroshima U.), M. Yamauchi, N. Ohmori, M. Akiyama (Univ. of Miyazaki), K. Yamaoka (Nagoya U.), S. Sugita (Ehime U.), Y. E. Nakagawa, M. Kokubun, T. Takahashi (ISAS/JAXA), W. Iwakiri (RIKEN), Y. Hanabata (ICRR), Y. Urata (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo) on behalf of the Suzaku WAM team, report: The short GRB 130628A (Byrne et al. GCN 14969) was detected by the the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 12:44:04.634 UT (=T0). The observed light curve shows a single peak with a duration (T90) of about 2.4 seconds. The fluence in 100 - 1000 keV was 3.70 (+0.65/-0.71) x 10^-6 erg/cm2. The 1-s peak flux measured from T0+2 s was 2.93 (+0.54/-0.71) photons/cm2/s in the same energy range. Preliminary result shows that the time-averaged spectrum from T0-5 s to T0+5 s is well fitted by a single power-law with a photon index of 2.11 (+0.41/-0.31) (chi2/d.o.f = 20.3/15). All the quoted errors are at statistical 90% confidence level, in which the systematic uncertainties are not included. The light curves for this burst will be available at: http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html