We have analysed the first 17 ks of XRT data for GRB 090519 (Perri et al., GCN 9400), from 121 s to 37 ks after the BAT trigger. The first 41 seconds of data are in Windowed Timing (WT) mode and at later times in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ. 9405). The light curve can be modelled with a series of power-law decays. The initial...Full Text

We provide further analysis of the photometric data on the afterglow of GRB 090519 (Perri et al., GCN 9400) taken at the NOT and VLT (Thoene et al., GCN 9403; Levan et al., GCN 9409). Calibration of the field based on archival VLT zeropoints yields a significantly fainter magnitude for the afterglow with respect to our previous GCN 9403, which was based on USNO stars. The new calibration...Full Text

Using FORS2 on the ESO Very Large Telescope, we have obtained low-resolution spectra (3 x 30 min) of the optical afterglow of GRB 090519 (Perri et al., GCN 9400; Thoene et al., GCN 9403) with the grism 300V, covering the wavelength range 3500-9200 AA. In the acquisition image the afterglow has a magnitude of R ~ 23.5. The first spectrum was taken approximately 4 hours after the burst. In...Full Text

We observed the field of GRB 090519 (Swift trigger 352648, M. Perri et al., GCN 9400) simultaneously in g'r'i'z'JHK with GROND mounted at the 2.2m ESO/MPI telescope at La Silla Observatory (Chile). Observations started on 19 May 2009 at 23:44 UT, 2.5 h after the burst, under challenging sky conditions with cirrus. We detect the afterglow at a position consistent with the enhanced XRT error circle...Full Text

The Swift/UVOT observed the field of GRB 090519 starting 106 s after the BAT trigger (Perri et al., GCN 9400). No optical afterglow is detected in the initial UVOT exposures at the enhanced position of the X-ray afterglow (Goad et al., GCN 9405) or the position of the NOT afterglow candidate (Thoene et al. GCN 9403). Three-sigma upper limits using the UVOT photometric system (Poole et al. 2008...Full Text

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Using 2178 s of XRT Photon Counting mode data and 1 UVOT images for GRB 090519, 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 = 142.27878, +0.18020 which is equivalent to: RA (J2000): 09h 29m 6.91s Dec (J2000): +00d 10' 48.7" with an uncertainty of 1.8 arcsec (radius, 90% confidence). This position...Full Text

report We observed the errorbox of the GRB 090519 (Perri et al, GCN 9400) with the 30cm robotic telescope BOOTES-1B in Spain. The observation started 99s after the GRB trigger. In our unfiltered images we do not detect any new object within the BAT or XRT errorbox with the following limits: Tstart-Tgrb exposure limit 99s 3.5s 15.1 108s 30s 16.5 108s ...Full Text

, GCN 9400) with the NOT equipped with ALFOSC. At the edge of the XRT error circle, we detect a fading source at coordinates (J2000): RA = 09:29:07.0 Dec = +00:10:49.1 with an error of ~0.5". The source faded by ~0.3 +- 0.10 mag between 19.8 and 44.4 min after the GRB, suggesting that this is indeed the afterglow of GRB 090519. A (fainter) object is seen at the position of the candidate...Full Text

We imaged the field of GRB 090519 detected by SWIFT (trigger 352648) with the FARO robotic telescope (D=20cm) located at the Chante Perdrix Observatory, Banon, France. FARO stands for Francois & Alain Robotic Observatory: http://chanteperdrix.dyndns.org The observations started 122.4s after the GRB trigger (53.0s after the notice). The elevation of the field decreased from 22 degrees above horizon...Full Text

We imaged the field of GRB 090519 detected by SWIFT (trigger 352648) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France. The observations started 76.0s after the GRB trigger (6.6s after the notice). The elevation of the field decreased from 21 degrees above horizon and weather conditions were good. The date of trigger : t0 = 2009-05-19T21:08:56.5 The first image...Full Text

At 21:08:56 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 090519 (trigger=352648). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 142.293, +0.183 which is RA(J2000) = 09h 29m 10s Dec(J2000) = +00d 10' 58" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows...Full Text