We observed again the field of GRB 080516 (Holland et al. 2008, GCN 7733) simultaneously in g'r'i'z'JHK using the multi-channel imager GROND. Observations started on May 16, 22:52 UT (22.5 hours after the burst) and lasted for 90 minutes. The faint source reported in our previous circular (Filgas et al., GCN 7740) is not detected anymore. We estimate that the source has faded by at least 1...Full Text

We observed the field of GRB 080516 (Holland et al. 2008, GCN 7733) simultaneously in g'r'i'z'JHK using the multi-channel imager GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2m MPI/ESO telescope on La Silla (Chile). Observations started at 00:25 UT, 8 min after the burst. At the border of the revised XRT error circle (Beardmore et al., GCN 7735) we detect in all bands a faint source...Full Text

We observed the afterglow (Klotz et al. GCN 7646, Guidorzi et al. GCN 7647, Jelinek et al. GCN 7648) of GRB 080430 (Guidorzi et al. GCN 7647) with Zeiss-600 of Mt.Terskol observatory on May. 01. The afterglow is detected in a combined image. A photometry of the OT against USNO-B1.0 stars is following: UT, Exposure, R_mag (mid time) May.01.8795 15x90s 20.9 +/-0.3 The...Full Text

Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained optical/IR imaging of the error region of GRB 080516 (GCN 7733, Holland et al.) with a mid-exposure time of 2008-05-16 01:27 UT (~1.2 hrs post-burst). Total summed exposure times amounted to 36 minutes in I and 30 minutes in J. No afterglow is detected at the enhanced Swift-XRT position (GCN 7735, Beardmore et al.). The 3-sigma...Full Text

We have analysed the first five orbits of data obtained for GRB 080516 (Holland et al., GCN 7733), covering 11.5 ks of Photon Counting (PC) mode data. The UVOT-enhanced XRT position was given by Beardmore et al. in GCN 7735. The light-curve begins relatively flat, with a decay of alpha ~ 0.36 +/- 0.17, until around 4800 seconds after the trigger, at which point the slope steepens to 1.04...Full Text

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Using 799 s of overlapping XRT Photon Counting mode and UVOT data for GRB 080516, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 120.64196, -26.15962 which is equivalent to: RA (J2000): 08 02 34.07 Dec (J2000): -26 09 34.6 with an uncertainty of 1.7 arcsec (radius, 90% confidence). This position...Full Text

We observed the afterglow of GRB 080514B (Rapisarda et al., GCN 7715; Giuliani et al., GCN 7716; de Ugarte Postigo et al., GCN 7719) with the NOT equipped with ALFOSC. Observations were carried out with the B, R and I filters. We clearly detect the afterglow in all bands. On mean time May 16.184 UT (1.77 days after the trigger), we measure R = 22.52 +- 0.10 (AB), calibrated against SDSS...Full Text

At 00:17:07 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080516 (trigger=311762). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 120.629, -26.176 which is RA(J2000) = 08h 02m 31s Dec(J2000) = -26d 10' 33" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed...Full Text

"We used the Very Large Array to observe the field of view toward super-AGILE GRB 080507 (GCN 7697) at a frequency of 8.46 GHz at 2008 May 13.14 UT. We do not detect the GRB afterglow at Swift-XRT position (GCN 7699). The flux density at the afterglow position is 44 ± 49 uJy. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative...Full Text

"We used the Very Large Array to observe the field of view toward super-AGILE GRB 080507 (GCN 7697) at a frequency of 8.46 GHz at 2008 May 13.14 UT. We do not detect the GRB afterglow at Swift-XRT position (GCN 7699). The flux density at the afterglow position is 44 ± 49 uJy. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative...Full Text

Using the XRT analysis reported by Page et al. (GCN 7723), we extrapolated an X-ray flux of 4.8 10^-13 cgi 1 day after the burst (2-10 keV). Using the Boer & Gendre relation, we estimate the redshift of GRB 080514B to be either 2.8 or 0.9 if this event is a group I or II respectively (see Gendre, Galli & Boër, ApJ, in press), with uncertainties of 30%. Further constraints on the redshift could...Full Text

The long GRB 080515 localized by IPN (Golenetskii et al., GCN 7728) triggered Konus-Wind at T0=18849.927 s UT (05:14:09.927). As observed by Konus-Wind the burst had a fluence of 2.02(-0.17, +0.20)x10^-5 erg/cm2, and a 16-ms peak flux measured from T0+24.016 s of (1.15 +/- 0.30)x10^-5 erg/cm2/s (both in the 20 keV - 2 MeV energy range). The time-integrated spectrum of the burst (from T0 to T0+32...Full Text

Mars Odyssey, Konus-Wind, Swift-BAT, and INTEGRAL-SPI-ACS observed the long-duration bright GRB 080513 at about 18850 s UT (05:14:10). The burst was outside the coded field of view of the BAT. The burst light curve shows a multipeaked structure with a duration of ~30 sec, followed by a weak pulse at ~T0+70 sec. We have triangulated the burst to the following, preliminary 3-sigma error box: ----------------------------------------------- ...Full Text

Given the very soft spectrum and galactic coordinates of 353.18,-1.70 (l,b), it very likely that this is a galactic transient. There will be an ATEL issued on this event. ...Full Text

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We observed GRB 080514B (Hurley et al., GCN 7715) using the KPNO 4m telescope and the NEWFIRM NIR imager under decent weather conditions. In 4 min of stacked exposures beginning 24 hours and 20 minutes after the trigger, we detect the afterglow (Postigo et al., GCN 7719) at J = 19.8 +/- 0.2 (as calibrated to the 2MASS catalog). Observations are ongoing. ...Full Text

We continued observing the field of GRB 080514B (Rapisarda et al., GCN 7715; Giuliani et al., GCN 7716) simultaneously in g'r'i'z'JHK using the multi-channel imager GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2m MPI/ESO telescope on La Silla (Chile)....Full Text

Following a ToO request, Swift-XRT started observing the field of GRB 080514B at 20:12 on 14th May, about 37 ks after the trigger. Within the SuperAGILE/IPN error box, there are two sources detected, one of which is much brighter and appears to be fading. We therefore believe this to be the X-ray afterglow of the GRB....Full Text

We observed the field of GRB 080514B (Rapisarda et al., GCN 7715; Giuliani et al., GCN 7716) simultaneously in g'r'i'z'JHK using the multi-channel imager GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2m MPI/ESO telescope on La Silla (Chile). Observations started at 7:03 UT, about 21 h after the burst....Full Text