Research Article

MASTER Prompt and Follow-Up GRB Observations

Table 1

GRB observations by MASTER system in 2008-2009.

BurstOptical limits, mComments (observatory, time after trigger information, exposures, circular number, etc.)

GRB091130B15MASTER-Amur, unfiltered image, 10-s exposures. The time delay is 40 s after the notice time (65 s after the GRB time). There is no OT brighter than 15 m at the Swift XRT position [6].
GRB09113014.5MASTER-Amur observations. 23 seconds after the notice time (7 min 22 s after the GRB time). We do not see OT brighter than 14 mag in BAT error box [7].
GRB091127~14 magMASTER-II-Kislovodsk observed 9 seconds after notice time (91 s after the GRB time). OT images in both polarizations [8].
GRB09102017.9 RMASTER-II-Kislovodsk has optical transient polarimetry observed OT 3422 s after the GRB time in R and unfiltered. There are images in different polarization angles [9].
GRB09082011MASTER-Kislovodsk and Irkuts VWFC responded to Fermi trigger 272421498, 9 s after the GRB time. We took 1300 images with 5-second exposition in different polarization angles [10].
GRB090715B20MASTER-Moscow observations, 19 s after the GCN notice time (8 m 04 s after the burst). 160 images with 30-second expositions. No OT [11].
GRB090528BR > 19.0 V > 18.1MASTER-URAL, 7 hours after GRB, 180-s exposures in R and V filters. Our images cover 30% last 1- Fermi error box. No OT [12].
GRB090424~8, ~9Prompt observations by 6 MASTER VWFC in Kislovodsk and Irkutsk with common FOW = 6000 sq·deg., 1-s exposures. Unfiltered images (close to V band). No OT [13].
GRB090408B17MASTER-URAL, R and V 60-s exposure, starting after sunset (87 min after trigger time). No OT [14].
GRB090328B9.1Prompt observations at MASTER VWFC located at Irkutsk. 1-s exposures during night: before, during, and after GRB. No OT [15].
GRB090320BV ~ 9.0Prompt observation by MASTER VWFC located at Kislovodsk. We observed ~80% 1- Fermi error box with 1-s exposure during all night: before, during, and after GRB time. No OT [16].
GRB090305BV ~ 9.5Prompt observation by MASTER VWFC located at Kislovodsk observed ~80% 1- Fermi error box with 1-s exposure 7 hours before, during, and 1 hour after GRB time [17].
GRB081215AV ~ 11MASTER VWFC located at Kislovodsk observed Fermi trigger (SGR 0044+42) during all night with 5-s expositions [18].
GRB081130BV ~ 12Prompt observation. MASTER VWFC located at Kislovodsk observed Fermi trigger with 5-s exposures. No OT [19].
GRB08111019MASTER-Moscow observed error box 6 hours 42 minutes after the GRB time. We have 89 images with limit for coadded one up to 19 m (S/N = 4). No OT [20].
GRB081102V ~ 132 of MASTER VWFC at Kislovodsk observed this error box with 5-s exposures during all night. There are two separated (~702 m) mount with double cameras [21]
GRB080822B18.8MASTER-Moscow observed his gamma-ray burst 18 m 43 s after the GRB time with 30-s exposures. Each image has 17 m. Summary image (25 × 30 s) has 18.8 m. The unfiltered images are calibrated relative to USNO A2.0 (0.8 R + 0.2 B) [22].
GRB080605R ~ 11.5MASTER VWFC at Kislovodsk observed it 46 s after the GRB time (12 s after the notice arrival time) with a series of 5-s exposures. Unfiltered (close to V). No OT [23]
GRB080319DV ~ 11.5MASTER VWFC at Kislovodsk observed Swift-BAT trigger with a series of 5-s exposures starting 92 s after notice arrival time (708 s after GRB time). Unfiltered (close to R, i.e., another camera). No OT [24].

GRB08020519.5MASTER-Moscow observed it 481 minutes after the GRB time. No OT [25].