At 11:47:24 UT, the Swift Burst Alert Telescope (BAT) triggered and located a burst consistent with the known High Mass X-Ray binary LS I +61 303 (trigger=513505). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 40.100, +61.220 which is RA(J2000) = 02h 40m 24s Dec(J2000) = +61d 13' 13" with an uncertainty of 3 arcmin (radius, 90% containment, including...Full Text

We observed the field of the INTEGRAL burst GRB 120202A (Mereghetti et al., GCN 12909) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m MPI/ESO telescope at La Silla Observatory (Chile). Observations started at 06:25 UT on February 3rd, 8.8 hrs after the GRB trigger. They were performed at an average seeing of 1arcsec and at high airmass...Full Text

We imaged the field of GRB 120202A (Mereghetti et al. GCN 12909) using the WHT/ACAM and Gemini-N/GMOS.  At the location of the X-ray source identified by Holland et al. (GCN 12911) we find a faint source at position: 13:34:00.80  +22:46:24.3 with the following provisional magnitudes (both photometry and astrometry are calibrated against SDSS DS8): WHT r= 25.00 +/- 0.15  (approx 7:40...Full Text

We have analysed 4.5 ks of XRT data for the INTEGRAL-detected burst: GRB 120202A (Mereghetti et al., GCN 12909), from 33.9 ks to 58.6 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 at: RA, Dec = 203.503595, 22.773873 deg which is equivalent to: RA (J2000): 13h 34m 00.86s Dec(J2000): +22d 46' 25.94" with...Full Text

We imaged the field of GRB 120202A detected by INTEGRAL (trigger 6461) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France. The observations started 20s after the GRB trigger (14s after the notice). The burst was still active. The elevation of the field increased from 9 degrees above horizon and weather conditions were good. The first image is trailed with a duration...Full Text

a long gamma ray burst lasting about 100 s has been detected by IBAS in the IBIS/ISGRI data at 21:40:17 UT of February 2. Its refined coordinates (J2000) are: RA: 203.5065 [degrees], DEC: 22.7747 [degrees] with an uncertainty of 2.5 arcmin (90% c.l.). A preliminary analysis gives a 20-200 keV fluence of about 7e-8 erg/cm2 and a peak flux of about 0.2 ph/cm2 s (1 s integration time) A plot...Full Text

Until recently, Swift UVOT continued observations in multiple filters of GRB 111228A (Ukwatta et al., GCN 12737). Based on the observations taken up to January 31, 2012 in the white filter, a possible host is detected. The UVOT position in decimal degrees of the GRB during the early and peak emission period is: RA=150.06684 DEC=+18.297834, J2000 (sexagesimal 10:00:16.04, +18:17:52.20), consistent...Full Text

O.Gres, O.Chuvalaev,K.Ivanov, V.A.Poleshchuk, S.Yazev, N.M.Budnev Irkutsk State University V.Krushinski, I.Zalozhnich, A. Popov Ural State University, Kourovka E. Sinykov, V.Yurkov, Yu.Sergienko, D.Varda, Blagoveschensk Educational State University, Blagoveschensk A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory...Full Text

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The long intense GRB 120129A (localized by IPN: Golenetskii et al., GCN 12904) triggered Konus-Wind at T0=50148.403s UT (13:55:48.403). The observation is performed against very high and variable background count rate caused by solar charged particles. The burst light curve shows two bright partly overlapped pulses. A total duration of the burst is ~4 s. The emission is seen up to ~5 MeV. The Konus-Wind...Full Text

Costa, E. Del Monte, I. Donnarumma, Y. Evangelista, M. Feroci, I. Lapshov, F. Lazzarotto, L. Pacciani, M. Rapisarda, P. Soffitta, for the SuperAGILE team, report: The long-duration, very intense GRB 120129A was observed by Konus-Wind, MESSENGER (GRNS), AGILE (MCAL and SuperAGILE), Fermi (GBM), and Swift (BAT) at about 50146 s UT (13:55:46). The burst was outside the coded fields of view of the...Full Text

We have imaged the location of the MAXI GRB 120127A (Song et al., GCN 12901) with the Palomar 48 inch Oschin Schmidt telescope as part of the Palomar Transient Factory. Observations began at 3:41 UT on 28 January 2012 (~ 23.3 hours after the MAXI trigger) and cover ~ 90% of the MAXI error localization. By comparing sources detected in our images with the USNO-B1 catalog, 2MASS point source catalog...Full Text

O.Gres, O.Chuvalaev,K.Ivanov, V.A.Poleshchuk, S.Yazev, N.M.Budnev Irkutsk State University V.Krushinski, I.Zalozhnich, A. Popov Ural State University, Kourovka E. Sinykov, V.Yurkov, Yu.Sergienko, D.Varda, Blagoveschensk Educational State University, Blagoveschensk A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory...Full Text

MAXI/GSC triggered at 2012-01-27 04:21:52 UT on an uncatalogued X-ray transient source. The transient emission lasted for about 10 seconds within the 50 second long triangular transit response of MAXI/GSC. We identify this event as GRB 120127A. Assuming that the source flux was constant over the transit, we obtain a statistical 90% C.L. elliptical error region centered on (R.A., Dec) = (139.14...Full Text

We observed the field of the Swift GRB 120118B (Littlejohns et al., GCN 12852, 12854) with ORI-40 telescope of Kitab ISON observatory on Jan. 18 between (UT) 17:39:55 and 18:10:51. We obtained several unfiltered images with exposure of 60 seconds. On the stacked image we do not detect a source reported by D'Avanzo et al. (GCN 12870). The photometry is based on nearby reference stars of USNO-B1...Full Text

We observed the field of the Swift GRB 120116A (Melandri et al., GCN 12834) with ORI-40 telescope of Kitab ISON observatory on Jan. 16 starting (UT) 18:12:48, i.e. ~6 min after burst trigger. We obtained several unfiltered images with exposure of 60 seconds. On the stacked image we do not detect any source within the enhanced XRT error box (Goad et al., GCN 12846). The photometry is based on nearby...Full Text

We observed GRB 120119A (GCN 12859, Beardmore et al.) in B,V,R- bands with a 1 m telescope at Mt. Lemmon, Arizona, US. The observation began at 06:03:31 UT, ~ 2 hours after burst alert. We took 3 frames for each filter with the exposure time, 300 secs...Full Text

We observed the field of GRB 120119A (Siegel et al., GCN 12720) with the Sub-Millimeter Array (SMA). The observation in the 225 GHz band was started at January 19 11.1 UT (7.1 hours after the trigger). Our preliminary analysis show no counterpart brighter than 8.1 mJy (3-sigma). ...Full Text

"The Fermi Gamma-ray Burst Monitor (GBM) trigger 348984161 (120123169) at 04:02:39.68 UT on 23 January 2012, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to a solar flare." ...Full Text

"We observed the position of GRB 120119A (GCN 12859) with the EVLA beginning 2012 Jan 21.2 UT (2.0 days after the burst) at a mean frequency of 5.8 GHz. No significant radio emission is detected at the enhanced Swift-XRT position (GCN 12876), the UVOT position (GCN 12859) or optical position (e.g. GCN 12881), to a three-sigma upper limit of 34 uJy." ...Full Text