//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 16427 SUBJECT: IPN Triangulation of GRB 140619C (long/very intense) DATE: 14/06/21 10:29:40 GMT FROM: Dmitry Svinkin at Ioffe Institute K. Hurley and J. Goldsten, on behalf of the MESSENGER NS GRB team, I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin, on behalf of the HEND-Odyssey GRB team, S. Golenetskii, R. Aptekar, V. Pal'shin, D. Frederiks, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, and K. Yamaoka, M. Ohno, Y. Hanabata, Y. Fukazawa, T. Takahashi, M. Tashiro, Y. Terada, T. Murakami, and K. Makishima on behalf of the Suzaku WAM team, report: The long-duration, very intense GRB 140619C has been observed by Konus-Wind, MESSENGER (GRNS), Mars-Odyssey (HEND), INTEGRAL (SPI-ACS), and Suzaku (WAM), so far, at about 81966 s UT (22:46:06). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 233.018 (15h 32m 04s) -25.599 (-25d 35' 55") Corners: 233.298 (15h 33m 12s) -25.530 (-25d 31' 48") 232.810 (15h 31m 14s) -26.672 (-26d 40' 18") 232.738 (15h 30m 57s) -25.666 (-25d 39' 56") 233.252 (15h 33m 00s) -24.382 (-24d 22' 57") --------------------------------------------- The error box area is 0.549 sq. deg, and its maximum dimension is 2.3 deg (the minimum one is 0.426 deg). This box may be improved. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB140619_T81966/IPN/ The time history and spectrum will be given in a forthcoming GCN Circular. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 16429 SUBJECT: Konus-Wind observation of GRB 140619C DATE: 14/06/21 14:56:08 GMT FROM: Valentin Pal'shin at Ioffe Inst S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, A. Lyssenko, and T. Cline on behalf of the Konus-Wind team, report: A long-duration, very intense GRB 140619C (IPN triangulation: Hurley et al., GCN 16427) triggered Konus-Wind at T0=81966.864 s UT (22:46:06.864). The burst light curve shows two separate multipeaked episodes: the first from ~T0-6 s to ~T0+12 s and the second longer and brighter from ~T0+68 s to ~T0+93 s. The total duration of the burst is ~105 s. The emission is seen up to ~10 MeV. As observed by Konus-Wind, the burst had a fluence of 1.1(-0.08,+0.08)x10^-4 erg/cm2, and a 64-ms peak flux, measured from T0+72.832 s, of 2.25(-0.16,+0.16)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum of the burst (measured from T0 to T0+97.792 s) is best fit in the 20 keV - 10 MeV range by the GRB (Band) model with the following parameters: the low-energy photon index alpha = -1.15 (-0.15,+0.19), the high energy photon index beta = -2.37 (-0.13,+0.10), the peak energy Ep = 129 (-12,+13) keV, chi2 = 94/84 dof. The spectrum near the peak count rate (measured from T0+65.792 to T0+81.408 s) is best fit in the 20 keV - 10 MeV range by the GRB (Band) model with the following parameters: the low-energy photon index alpha = -1.05 (-0.13,+0.13), the high energy photon index beta = -2.37 (-0.14,+0.09), the peak energy Ep = 169 (-15,+20) keV, chi2 = 114/97 dof. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB140619_T81966/ All the quoted errors are at the 90% confidence level. All the quoted values are preliminary. [GCN OPS NOTE(21jun14) Added 140629C to the Subject line, and changed 140616 to 140619 in the first sentence.] //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 16430 SUBJECT: Correction to GCN 16429 (GRB 140619C) DATE: 14/06/21 15:26:33 GMT FROM: Valentin Pal'shin at Ioffe Inst V. Pal'shin reports on behalf of the Konus-Wind team: The correct title of GCN 16429 should be "Konus-Wind observation of GRB 140619C", and the GRB name in the text should be also GRB 140619C (not GRB 140616C). //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 16502 SUBJECT: GRB 140619C: Suzaku WAM observation of the prompt emission DATE: 14/07/02 10:55:03 GMT FROM: Kazutaka Yamaoka at Nagoya U W. Iwakiri (RIKEN), M. Tashiro, Y. Terada, T. Yasuda, S. Koyama, S. Takeda, T. Nagayoshi, J. Enomoto, S. Nakaya, T. Fujinuma, S. Matsuoka (Saitama U.), M. Yamauchi, N. Ohmori, R. Kinoshita (Univ. of Miyazaki), M. Ohno, T. Kawano, S. Furui, Y. Fukazawa (Hiroshima U.), K. Yamaoka (Nagoya U.), S. Sugita (Ehime U.), Y. Hanabata (ICRR), Y. E. Nakagawa, M. Kokubun, T. Takahashi (ISAS/JAXA), Y. Urata (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo), on behalf of the Suzaku WAM team, report: The bright GRB 140619C (localized by IPN: Hurley et al., GCN 16427; Konus-Wind detection: Golenetskii et al., GCN 16429) triggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at UT 22:46:01.623 (=T0). The observed light curve shows a multi-peaked structure, consisting of two separated episodes: the first one lasting from T0 to T0+6 s, and the second brighter one lasting from T0+70 s to T0+94 s, with a total duration (T90) of about 87 seconds. The fluence in 100 - 1000 keV was 4.34 (+0.21, -0.23)x10^-5 erg/cm^2. The 1-s peak flux measured from T0+75 s was 8.32 (+1.12, -1.17) photons/cm^2/s in the same energy range. Preliminary result shows that the time-averaged spectrum from T0 to T0+92 s is well fitted by a single power-law with a photon index of 2.50 (+0.15, -0.14) (chi^2/d.o.f = 15.4/14). All the quoted errors are at statistical 90% confidence level. There might be some calibration uncertainties in spectral parameters since the GRB photons came through the X-ray micro-calorimeter (XRS) dewar. The light curves for this burst will be appeared at: http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html