The short GRB 071227 (Swift/BAT trigger #299787; Sato et al., GCN 7148; Sakamoto et al., GCN 7156) triggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 2007-12-27 20:13:47.71 UT (=T0). ...Full Text

We observed again the field of the short GRB 071227 (Sakamoto et al., GCN 7147; Sato et al. GCN 7148 and GCN 7156) with the ESO-VLT equipped with the FORS2 camera in imaging mode on Dec 31.2147. We compared our images with respect to our first epoch of observations (Dec 28.1328; D'Avanzo et al., GCN 7152). Image subtraction performed with the ISIS package on our two sets of images...Full Text

We further report about the additional analysis of the spectral lag and the extended emission for a possible short GRB 071227. Now, we believe GRB 071227 is very likely a short GRB based on following the BAT prompt emission properties. ...Full Text

The short GRB 071227 (Swift-BAT trigger #299787: Sakamoto et al., GCN 7147, Sato et al., GCN 7148) triggered Konus-Wind at T0=72828.722 s UT (20:13:48.722). The Konus-Wind light curve shows a multipeaked structure with a total duration of ~1.7 s. Most of the burst was recorded in the pre-history part of the trigger for which multichannel spectra are not measured. The multichannel spectrum...Full Text

"We obtained three 900-s spectra of the candidate host galaxy of GRB 071227 (GCN 7150, GCN 7151) with IMACS on the Magellan/Baade telescope. We find the same emission line noted by D'Avanzo et al. (GCN 7152), as well as a second emission line which corresponds to [OIII]5006 at the same redshift. From preliminary wavelength calibration we find z=0.384. If this is the host galaxy of...Full Text

The Swift-XRT began observing GRB 071227 (trigger #299787) at 20:15:04UT, 79.5 seconds after the BAT trigger (Sakamoto et al., GCN 7147). Using 382 s of overlapping XRT Photon Counting mode and UVOT V-band data, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue) of RA, Dec = 58.13002, -55.98419, which is...Full Text

We observed the field of GRB 071227 (Sakamoto et al., GCN 7147; Sato et al. GCN 7148) with the ESO-VLT equipped with the FORS2 camera. A spectrum (grism 300V) of the galaxy inside the XRT error box (Cucchiara & Sakamoto GCN 7150; Berger et al. GCN 7151) taken on Dec 28.1885 (about 8.3 hours after the burst) displays an emission line at 5154.77 A. Interpreting this feature as [O II]...Full Text

"We observed the position of GRB 071227 (GCN 7148) with the IMACS instrument on the Magellan/Baade telescope starting on 2007 Dec. 28 at 03:52 UT (7.7 hours after the burst). In a 300-sec R-band exposure we detect a single galaxy within the XRT error circle, coincident with the position of the UVOT source (GCN 7150). This object is also visible in the DSS. The galaxy has spiral, edge-on...Full Text

The Swift/UVOT observed the field of GRB 071227 (trigger #299787) starting 86 seconds after the BAT trigger (Sakamoto et al.2007, GCN 7147). We do not find any new source in any of the UVOT single observations inside the XRT error circle. Coadding all the images for each single filter an OT candidate has been detected at 3-sigma confidence level in the White filter coadded image at the position ...Full Text

The robotic 60-cm REM telescope located at La Silla (Chile) observed the field of the GRB 071227 (Sakamoto et al., GCN 7147). Observations were performed automatically in the both optical (R, I) and NIR (Z, J, H, K) filters at Dec 28.03611 (about 4.6 hours after the burst ) ....Full Text

Using the data set from T-120 to T+183 sec from the recent telemetry downlink, we report further analysis of BAT GRB 071227 (trigger #299787) (Sakamoto, et al., GCN 7147). The BAT ground-calculated position is RA, Dec = 58.132, -55.959 deg which is ...Full Text

At 20:13:47 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 071227 (trigger=299787). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 58.120, -55.953 which is ...Full Text