//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 25154 SUBJECT: GRB 190726A: Fermi GBM Final Real-time Localization DATE: 19/07/26 15:36:44 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 15:24:53 UT on 26 Jul 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190726A (trigger 585847498.610468 / 190726642). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 310.3, Dec = 34.3 (J2000 degrees, equivalent to J2000 20h 41m, 34d 17'), with a statistical uncertainty of 1.2 degrees. The angle from the Fermi LAT boresight is 72.0 degrees. The skymap can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190726642/quicklook/glg_skymap_all_bn190726642.png The HEALPix FITS file, including the estimated localization systematic, can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190726642/quicklook/glg_healpix_all_bn190726642.fit The GBM light curve can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190726642/quicklook/glg_lc_medres34_bn190726642.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 25155 SUBJECT: GRB 190726A: BALROG localization (Fermi Trigger 585847498 / GRB 190726642) DATE: 19/07/26 15:59:52 GMT FROM: Jochen Greiner at MPE,Garching B. Biltzinger, F. Kunzweiler, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report: The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger 585847498 at 15:24:53 on 26 July 2019 were automatically fitted for spectrum and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427; Berlato et al. 2019, ApJ 873, 60). The best-fit position (1 sigma statistical errors) is: RA(2000.0) = 310.8+/-0.9 deg Decl.(2000.0) = 34.9+/-1.2 deg We estimate an additional systematic error of 2 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB190726642/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB190726642/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB190726642/json //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 25305 SUBJECT: GRB 190726A: Insight-HXMT/HE detection DATE: 19/08/09 13:00:51 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 2019-07-26T15:24:59.20 (T0), Insight-HXMT/HE detected GRB 190726A (trigger ID: HEB190726642) in a routine search of the data, which was also triggered by Fermi/GBM (GCN #25154). The Insight-HXMT/HE light curve mainly consists of a single pulse with a duration (T90) of 2.94 s measured from T0-2.19 s. The 1-ms peak rate, measured from T0-1.91 s, is 1319 cnts/sec. The total counts from this burst is 3047 counts. URL_LC: http://www.hxmt.org/images/GRB/HEB190726642_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.