//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 14130 SUBJECT: GRB 130102B: MAXI/GSC detection DATE: 13/01/03 05:48:37 GMT FROM: Motoko Suzuki at RIKEN M. Higa (Chuo U.), H. Negoro (Nihon U.), M. Serino (RIKEN), S. Ueno, H. Tomida, S. Nakahira, M. Kimura, M. Ishikawa (JAXA), T. Mihara, M. Sugizaki, K. Morihana, T. Yamamoto, J. Sugimoto, T. Takagi, M. Matsuoka (RIKEN), N. Kawai, M. Morii, R. Usui, K. Ishikawa (Tokyo Tech), A. Yoshida, T. Sakamoto, Y. Nakano (AGU), H. Tsunemi, M. Sasaki (Osaka U.), M. Nakajima, M. Asada (Nihon U.), Y. Ueda, K. Hiroi, M. Shidatsu, R. Sato, T. Kawamuro (Kyoto U.), Y. Tsuboi (Chuo U.), M. Yamauchi, Y. Nishimura, T. Hanayama, K. Yoshidome, Y. Ogawa (Miyazaki U.), K. Yamaoka (ISAS) report on behalf of the MAXI team At 2013-01-02T04:41:42 UT, the MAXI/GSC nova alert system triggered on a bright uncatalogued X-ray transient source. The transient emission started at 04:41:42 and lasted at least 45 seconds within the 74 second long triangular transit response of MAXI/GSC. We identify this event as GRB 130102B. Assuming that the source flux was constant over the transit, we obtain the source position at (R.A., Dec) = (309.58 deg, -72.38 deg ) = (20 38 20, -72 22 36)(J2000) with a 90% C.L. statistical error of 0.2 deg and an additional systematic uncertainty of 0.2 deg (90% containment radius). The 4-10 keV flux was 320 +- 40 mCrab. There was no significant excess flux in the previous transit at 03:09UT and in the next transit at 06:15 UT　with an upper limit of 20 mCrab for each. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 14135 SUBJECT: Konus-Wind observation of GRB 130102B DATE: 13/01/04 15:49:03 GMT FROM: Dmitry Svinkin at Ioffe Institute S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team report: The long GRB 130102B localized by MAXI/GSC (Higa et al., GCN 14130) was detected by Konus-Wind in the waiting mode. The burst light curve shows a single pulse with a total duration of ~30 s. As observed by Konus-Wind, the burst had a fluence of (3.46 +/- 0.28)x10^-6 erg/cm2 (in the 20 - 1400 keV energy range). Fitting the K-W 3-channel time-integrated spectrum (from T0(MAXI)-21 s to T0(MAXI)+11 s) by a simple power-law model yields a power law index of 2.85 +/- 0.17. All the quoted errors are estimated at the 1 sigma confidence level. The K-W light curve of this burst is available at http://www.ioffe.rssi.ru/LEA/GRBs/GRB130102B/ //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 14137 SUBJECT: GRB 130102B: MASTER synchronous observations DATE: 13/01/05 14:27:55 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs H. Levato and C. Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) C. Mallamaci, C. Lopez and F. Podest Observatorio Astronomico Felix Aguilar (OAFA) E. Gorbovskoy, V. Lipunov, V. Kornilov, D. Denisenko, A. Kuznetsov, D. Kuvshinov, A. Belinski, N. Tyurina, N. Shatskiy, P. Balanutsa, D. Zimnukhov, V.V. Chazov Lomonosov Moscow State University, Sternberg Astronomical Institute A. Tlatov, A.V. Parhomenko, D. Dormidontov, V. Sennik Kislovodsk Solar Station of the Pulkovo Observatory K. Ivanov, S. Yazev, N.M. Budnev, O. Gres, O. Chuvalaev, V.A. Poleshchuk Irkutsk State University V. Yurkov, Yu. Sergienko, D. Varda, E. Sinyakov Blagoveschensk Educational State University, Blagoveschensk V. Krushinski, I. Zalozhnich, A. Popov, A. Bourdanov, A. Punanova Ural Federal University MASTER-ICATE robotic very wide field cameras (FOV=2x384 square degrees, D=72mm, f/1.2, 1 pix = 22 arcsec, http://observ.pereplet.ru) located in Argentina (Observatorio Astronomico Felix Aguilar, http://93.180.27.230:8080/) were imaging the sky area of MAXI/GSC GRB 130102B (M. Higa et al., GCN 14130) before, during and after trigger time with 2 sec exposures without time gap. Elevation of center of GRB error box at the moment of MAXI/GSC trigger was 16 deg. We have covered the whole interval of gamma-ray activity by KONUS-WIND (Golenetski et al., GCN 14135) which corresponds to T-20 sec to T+10 sec from MAXI/GSC trigger time. We haven't found optical transient within MAXI/GSC error box on our 2-s frames and on the coadded image made of 15 frames and total exposure of 30 seconds. The 3-sigma upper limit (with the reference to V magnitudes from Tycho-2 catalog) has been about 10.0 mag on single images and 11.5 mag on coadded image. The reduction of the whole data set is continuing. This message can be cited.