GRBweb - GRB190706C

GRB190706C

This page lists all entries on GRB190706C in GRBweb

Summary GCN 25035 GCN 25038 GCN 25042 GCN 25060

Summary table
Variable	Value	Source
T0	13:42:28 UTC	GCN_circulars,IPN Triangulation
ra	351.6710°	GCN_circulars,IPN Triangulation
decl	24.7540°	GCN_circulars,IPN Triangulation
GBM_located	False
mjd	58670.57115740741	GCN_circulars,IPN Triangulation

GCN 25035 table
GRB_name	GRB190706C
GCN_number	25035
Detection_method	IPN Triangulation
t_trigger	13:42:28 UTC
ra	351.6710°
decl	24.7540°
Circular_text	TITLE: GCN CIRCULAR NUMBER: 25035 SUBJECT: IPN triangulation of GRB 190706C (long/very bright) DATE: 19/07/08 19:18:06 GMT FROM: Dmitry Svinkin at Ioffe Institute D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, A. Kozlova, and T. Cline on behalf of the Konus-Wind team, K. Hurley, on behalf of the IPN, A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, and S. Barthelmy, J. Cummings, H. Krimm, and D. Palmer, on behalf of the Swift-BAT team, report: The long-duration, very bright GRB 190706C has been detected by INTEGRAL (SPI-ACS trigger 8325), CALET (GBM trigger 1246455687), Konus-Wind, and Swift (BAT), so far, at about 49348 s UT (13:42:28). The burst was outside the coded field of view of the BAT. We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 351.671 (23h 26m 41s) +24.754 (+24d 45' 15") Corners: 352.463 (23h 29m 51s) +23.689 (+23d 41' 22") 352.742 (23h 30m 58s) +23.905 (+23d 54' 20") 350.850 (23h 23m 24s) +25.803 (+25d 48' 11") 350.570 (23h 22m 17s) +25.583 (+25d 35' 00") --------------------------------------------- The error box area is about 3079 sq. arcmin, and its maximum dimension is 2.59 deg (the minimum one is 20.0 arcmin). The Sun distance was about 100 deg. This box may be improved. This burst is spatially and temporally inconsistent with LIGO/Virgo S190706ai (LVC GCN Circ. 24998) and LIGO/Virgo S190707q (LVC GCN Circ. 25012). A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB190706_T49348/IPN The time history and spectrum will be given in forthcoming GCN Circulars.

GCN 25038 table
GRB_name	GRB190706C
GCN_number	25038
Detection_method	CALET
Circular_text	TITLE: GCN CIRCULAR NUMBER: 25038 SUBJECT: GRB 190706C: CALET Gamma-Ray Burst Monitor detection DATE: 19/07/09 10:01:00 GMT FROM: Valentin Pal'shin at AGU T. Sakamoto, A. Yoshida, V. Pal'shin, S. Sugita (AGU), Y. Kawakubo (LSU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN), Y. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC), M. L. Cherry (LSU), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena) and the CALET collaboration: The bright GRB 190706C (IPN triangulation: Svinkin et al., GCN Circ. 25035) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 13:42:22.560 UTC on 6 July 2019. The burst signal was seen by all CGBM detectors. The burst light curve shows a single multi-peaked emission episode which starts at T+3.5 sec, peaks at T+6.6 sec and ends at T+10.4 sec. The T90 and T50 durations measured by the SGM data are 3.9 +- 0.8 sec and 2.2 +- 0.1 sec (40-1000 keV), respectively. Despite the burst high intensity there is almost no emission above ~1 MeV. The ground processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1246455687/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.

GCN 25042 table
GRB_name	GRB190706C
GCN_number	25042
Detection_method	Konus-Wind Det
t_trigger	13:42:28.840 UTC
Circular_text	TITLE: GCN CIRCULAR NUMBER: 25042 SUBJECT: Konus-Wind observation of GRB 190706C DATE: 19/07/09 12:39:03 GMT FROM: Anastasia Tsvetkova at Ioffe Institute A. Tsvetkova, S. Golenetskii, R.Aptekar, D. Frederiks, M. Ulanov, D. Svinkin, A. Lysenko, A. Kozlova and T. Cline on behalf of the Konus-Wind team, report: The long-duration, very bright GRB 190706C (IPN triangulation: Svinkin et al., GCN 25035; CALET Gamma-Ray Burst Monitor detection: Sakamoto et al., GCN 25038) triggered Konus-Wind at T0=49348.84 s UT (13:42:28.840). The burst light curve shows a multi-peaked structure with a total duration of ~6.5 s. The emission is seen up to ~2 MeV. As observed by Konus-Wind, the burst had a fluence of 2.52(-0.17,+0.20)x10^-5 erg/cm2, and a 64-ms peak energy flux, measured from T0+2.640 s, of 1.80(-0.19,+0.19)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum of the burst (measured from T0 to T0+3.072 s) is best fit in the 20 keV - 2 MeV range by the GRB (Band) model with the following parameters: the low-energy photon index alpha = -0.56(-0.09,+0.10), the high energy photon index beta = -3.09(-0.70,+0.35), the peak energy Ep = 281(-20,+19) keV, chi2 = 34/56 dof. The spectrum near the peak count rate (measured from T0+2.048 to T0+3.072 s) is best fit in the 20 keV - 3 MeV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)exp(-E(2+alpha)/Ep) with alpha = -0.39(-0.12,+0.13), and Ep = 288(-19,+22) keV (chi2 = 53/51 dof). Fitting by the GRB (Band) model yields the same alpha and Ep, and an upper limit on the high energy photon index: beta < -2.86 (chi2 = 52/50 dof). The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB190706_T49348/ All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.

GCN 25060 table
GRB_name	GRB190706C
GCN_number	25060
Detection_method	CALET
Circular_text	TITLE: GCN CIRCULAR NUMBER: 25060 SUBJECT: GRB 190706C: Insight-HXMT/HE detection DATE: 19/07/12 13:55:37 GMT FROM: YaoGuang Zheng at IHEP Y. G. Zheng, C. Cai, Q. Luo, S. Xiao, Q. B. Yi, Y. Huang, C. K. Li, G. Li, X. B. Li, J. Y. Liao, S. L. Xiong, C. Z. Liu, X. F. Li, Z. W. Li, Z. Chang, A. M. Zhang, Y. F. Zhang, X. F. Lu, C. L. Zou (IHEP), Y. J. Jin, Z. Zhang (THU), T. P. Li (IHEP/THU), F. J. Lu, L. M. Song, M. Wu, Y. P. Xu, S. N. Zhang (IHEP), report on behalf of the Insight-HXMT team: At 2019-07-06T13:42:25.95 (T0), Insight-HXMT/HE detected GRB 190706C (trigger ID: HEB190706571) in a routine search of the data, which was also triggered by INTEGRAL/SPI-ACS (trigger #8325), CALET/CGBM (GCN #25038) and Konus-Wind (GCN #25042). The Insight-HXMT/HE light curve mainly consists of a multiple pulses with a duration (T90) of 2.88 s measured from T0+0.13 s. The 1-ms peak rate, measured from T0+2.76 s, is 25839 cnts/sec. The total counts from this burst is 32484 counts. URL_LC: http://www.hxmt.org/images/GRB/HEB190706571_lc.jpg All measurements above are made with the CsI detectors operating in the regular mode with the energy range of about 80-800 keV (deposited energy). Only gamma-rays with energy greater than about 200 keV can penetrate the spacecraft and leave signals in the CsI detectors installed inside of the telescope. Insight-HXMT is the first Chinese space X-ray telescope, which was funded jointly by the China National Space Administration (CNSA) and the Chinese Academy of Sciences (CAS). More information about it could be found at: http://www.hxmt.org.