//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15509 SUBJECT: GRB 131122A (INTEGRAL trigger N6392): MASTER-NET optical observation DATE: 13/11/22 22:07:24 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, D.Denisenko, A.Sankovich Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University V.Krushinski, I.Zalozhnih, A. Popov Ural Federal University, Kourovka Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA) There are two telescope from MASTER-NET was pointed to the GRB131122A. MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Kislovodsk was pointed to the GRB131122A 69 sec after notice time and 76 sec after GRB time at 2013-11-22 21:26:33.898 UT in two polarizations. On our first (20s exposure) set we haven`t found optical transient within INTEGRAL trigger N 6392 error-box (ra=10 11 02 dec=+57 38 22 r=0.054667). The polaroids have RA and DEC orientation on this observatory. The 5-sigma upper limit has been about 16.4 mag MASTER II robotic telescope located in Blagoveschensk was pointed to the GRB131122A 76 sec after notice time and 82 sec after GRB time at 2013-11-22 21:26:39.328 UT in two polarizations. On our first (20s exposure) set we haven`t found optical transient within INTEGRAL trigger N 6392 error-box (ra=10 11 02 dec=+57 38 22 r=0.054667). The polaroids are oriented under corners 45 and 135 to the RA axis on this observatory. The 5-sigma upper limit has been about 16.3 mag The message may be cited. The data reduction are continued. The message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15510 SUBJECT: GRB 131122A: a long GRB detected with INTEGRAL DATE: 13/11/22 22:39:22 GMT FROM: Diego Gotz at CEA D. Gotz (CEA Saclay), S. Mereghetti (IASF-Milano), E. Bozzo, C. Ferrigno, (ISDC, Versoix), and J. Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: a gamma ray burst lasting about 70 s has been detected by IBAS in the IBIS/ISGRI data at 21:25:01 U.T. on November 22. Its refined coordinates (J2000) are: R.A.: 152.5553 deg DEC.: 57.7398 deg with an uncertainty of 1.6 arc min (90% c.l.). The burst had a fluence of about 2x10^-6 erg/cmsq in the 20-200 keV energy band, and a peak flux of 0.4 ph/cmsq/s in the same energy band over 1 s. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15511 SUBJECT: GRB 131122A: Nanshan optical upper limit DATE: 13/11/22 23:13:04 GMT FROM: Dong Xu at DARK/NBI D. Xu (DARK/NBI), G.-J. Feng, X. Zhang, A. Esamdin, L. Ma (XAO) report: We observed the IBIS/ISGRI field of GRB 131122A (Gotz et al., GCN 15510) using the 1m telescope located on Mt. Nanshan, Xinjiang, China. We obtained 6x360s R-band frames at a mean time of 22:28:18 UT on 2013-11-22, i.e., 1.055 hr after the INTEGRAL trigger. Visual inspect of the Intergral 1.6 arcmin error circle against DSS II and SDSS shows that no new optical source is detected down to a limiting magnitude of R=20.6 mag. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15512 SUBJECT: GRB 131122A: i-band observations from NOT DATE: 13/11/23 02:08:00 GMT FROM: Javier Gorosabel at IAA-CSIC J. Gorosabel (IAA-CSIC/UPV-EHU), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), D. Xu (DARK/NBI), S. Schulze (PUC, MCSS), N.R. Tanvir (U. Leicester), O. Smirnova (NOT, U. Latvia), J. Kåre (U. Oslo), E. Pakstiene (Vilnius U.), A.B. Aksnes, C. Eide, E.N. Traore, J. Joberg, L.K. Seljebotn, N. Von Huth, M. Lapadatu, R.W. Cale, M Heger (Horten videregående skole) report on behalf of a larger collaboration: We observed the field of the INTEGRAL GRB 131122A (Gorbovskoy et al., GCN 15509) with the 2.5m Nordic Optical Telescope (NOT) equipped with ALFOSC. Observations began at 00:34 UT (3.13 hr after the burst), when the field was at an airmass of ~3, and consisted of 8x180s in i-band, covering the complete INTEGRAL error box. The seeing of the combined image is around 0.9". We do not see any obvious new source down to the limit of the SDSS i-band image to which we have compared, although we note that our frame is somewhat deeper, showing faint sources not present in the SDSS. A more precise localisation and/or deeper comparison image will be needed in order to identify a possible optical counterpart to GRB 131122A. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15513 SUBJECT: GRB 131122A: Swift-XRT observations DATE: 13/11/23 09:31:05 GMT FROM: Alessandro Maselli at INAF/IASF Palermo A. Maselli (INAF-IASFPA) and V. D'Elia (ASDC) report on behalf of the Swift-XRT team: We have analysed 3.0 ks of XRT data for the INTEGRAL-detected burst GRB 131122A, from 13.7 ks to 21.1 ks after the INTEGRAL trigger. The data are entirely in Photon Counting (PC) mode. An X-ray source is detected within the INTEGRAL error circle. Using 1383 s of PC mode data and 1 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 152.54219, +57.72770 which is equivalent to: RA (J2000): 10h 10m 10.12s Dec(J2000): +57d 43' 39.7" with an uncertainty of 4.8 arcsec (radius, 90% confidence). This position is 50 arcsec from the INTEGRAL position. We cannot determine at the present time whether the source is fading. We note the presence of two DSS galaxies northbound the XRT source, close to the XRT error circle. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020328. This circular is an official product of the Swift-XRT team. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15514 SUBJECT: GRB 131122A: Upper limit from NOT imaging DATE: 13/11/23 10:49:11 GMT FROM: Antonio de Ugarte Postigo at IAA-CSIC A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), J. Gorosabel (IAA-CSIC/UPV-EHU), D. Xu (DARK/NBI), S. Schulze (PUC, MCSS), N.R. Tanvir (U. Leicester), O. Smirnova (NOT, U. Latvia), J. Kåre (U. Oslo), E. Pakstiene (Vilnius U.), A.B. Aksnes, C. Eide, E.N. Traore, J. Joberg, L.K. Seljebotn, N. Von Huth, M. Lapadatu, R.W. Cale, M Heger (Horten videregående skole) report on behalf of a larger collaboration: Further analysis of our i-band imaging from the 2.5 m NOT (Gorosabel et al., GCN 15512) of GRB 131122A (Gotz et al., GCN 15510), with mean epoch 00:49 UT (3.40 hr after the burst), shows no new source within the Swift-XRT error box (Maselli et al., GCN 15513) down to a 3-sigma magnitude limit of i=23.5 (AB). //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15515 SUBJECT: GRB 131122A: Swift/UVOT Upper Limits DATE: 13/11/23 15:59:12 GMT FROM: Craig Swenson at PSU/Swift C. A. Swenson (PSU) and A. Maselli (INAF-IASFPA) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 131122A 13578 s after the INTEGRAL trigger (Gotz et al., GCN Circ. 15510). No optical counterpart consistent with the potential XRT afterglow position (Maselli et al., GCN Circ. 15513) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white 14302 20578 855 >21.3 v 20830 21061 227 >19.0 u 13578 20136 1375 >21.0 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998). //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 15557 SUBJECT: GRB 131122A: Swift-XRT Further Observation DATE: 13/12/01 18:49:09 GMT FROM: Alessandro Maselli at INAF/IASF Palermo A. Maselli (INAF-IASFPA) reports on behalf of the Swift-XRT team: Swift-XRT performed a second observation of the INTEGRAL-detected burst GRB 131122A (Gotz et al., GCN Circ. 15510) starting on 2013 November 29, from 596 to 690 ks after the INTEGRAL trigger, for a total exposure of 4.9 ks. The source reported in occasion of the first XRT observation by Maselli & D'Elia (GCN Circ. 15513) is now detected at a count rate of (1.59+/-0.69)e-3 ct/s. This value is considerably lower than (1.06+/-0.21)e-2 ct/s corresponding to the first observation: therefore, we point at this source as the afterglow of GRB 131122A. This circular is an official product of the Swift-XRT team.