GRB 160824B: Lomonosov BDRG gamma ray detection and MASTER limitстатья Электронная публикация

Дата последнего поиска статьи во внешних источниках: 11 апреля 2017 г.

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[1] Grb 160824b: Lomonosov bdrg gamma ray detection and master limit / N. L. Dzhioeva, A. M. Amelushkin, V. O. Barinova et al. // GRB Coordinates Network. — 2016. — Vol. 19884. — P. c.1. Fermi GRB 160824B (Hamburg, GCN 19856; Yoshida et al., GCN 19873) was observed by Lomonosov on 16/08/24 around Fermi/CALET trigger time. It was visible by all 3 detectors of BDRG in energy range up to 1 MeV. The parameters of GRB are: Total duration ∼3s. Peak intensity in the range 20-1000 keV >6 photons/cm2*s in the range 20-1000 keV Peak intensity in the range 250-1000 keV >2 photons/cm2*s The Gamma Ray light curve is available at http://master.sai.msu.ru/static/GRB160824B_Lomonosov_BDRG.png MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Tunka was pointed to the GRB160824B (Hamburg et al, GCN 19856) 62 sec after notice time and 107 sec after trigger time at 2016-08-24 14:23:00 UT. On our first (20s exposure) set we found 56 optical transient within FERMI error-box (ra=08 21 12 dec=+46 14 00 r=3.833300) brighter then 15.83, but first alert have a too large coordinate error and this region is outside final error box. We cover part of final error box 619 sec after trigger time at 2016-08-24 14:31:32 UT by 3-th alert message. The 5-sigma upper limit has been about 18 mag on 120 s exposure image. No OT was found. MASTER II robotic telescope located in Blagoveschensk was starded inspect inside the GRB160824B (Hamburg et al, GCN 19856, Yoshida et al, GCN 19873) error box 1165 sec after trigger time at 2016-08-24 14:40:38 UT. We cover full 1 sigma + 3 degree systematic error box with 5-sigma upper limit about 18 mag. No OT was found. The cover map is available at http://master.sai.msu.ru/static/GRB160824B_MASTER_Cover.png . The message may be cited.

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