//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 20295 SUBJECT: GRB 161219A: a long GRB detected by INTEGRAL DATE: 16/12/19 17:24:41 GMT FROM: Diego Gotz at CEA D. Gotz (CEA, Saclay), S. Mereghetti (IASF-Milano), C. Ferrigno, E. Bozzo, J.G. Victor (ISDC, Versoix), and J. Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: a long gamma ray burst has been detected by IBAS in the IBIS/ISGRI data at 16:17:36 UT of 2016 December 19 Its refined coordinates (J2000) are: R.A.= 188.437 deg DEC.= 10.472 deg with an uncertainty of 1.5 arc min (90% c.l.). The burst lasts about 100 s and has peak flux of 1.2 photons/cmsq/s (20-200 keV, 1-s integration time) and fluence of 1.e-6 erg/cmsq (20-200 keV). A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 20330 SUBJECT: GRB161219.78 MASTER-Net OT detection DATE: 16/12/22 03:38:33 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs D.Buckley, S. Potter, A.Kniazev, M.Kotze South African Astronomical Observatory V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.V.Chazov Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Senik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, A. Gabovich, Yu.Sergienko Blagoveschensk Educational State University, Blagoveschensk K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University R. Podesta, Claudio Mallamaci, Carlos Lopez and Federico Podesta Observatorio Astronomico Felix Aguilar (OAFA) Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres The Instituto de Astrofisica de Canarias MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in SAAO was pointed to the GRB161219.78 26 sec after notice time and 42 sec after trigger time at 2016-12-19 18:49:21 UT. On our first (10s exposure) set we found 1 optical transient within SWIFT error-box (ra=91.7125 dec=-26.7897 r=0.05) brighter then 16.64. T-Tmid Date Time Expt. Ra Dec Mag ---------|---------------------|-------|-----------------|-----------------|------- 47 2016-12-19 18:49:21 10 (06h 06m 51.43s , -26d 47m 29.8s) 15.90 The 5-sigma upper limit has been about 16.64mag The message may be cited. [GCN OPS NOTE(22dec16): Per Operator, it is noted that GRB161219.78 is the same as GRB 161219B.]