Left: R-band image from May 9.16, 2005 UT, Right: Combined R-band image from 20 epochs between May 17 and Jun. 08, 2005 UT.
All data is obtained with the Danish 1.54m telescope at La Silla.
Seeing is about 1.0" in both images.
NUMBER: 3546 SUBJECT: GRB 050509.95: Optical monitoring DATE: 05/06/14 09:43:49 GMT
J. Gorosabel (IAA-CSIC), J. Hjorth, B. L. Jensen, U. G. Jørgensen (NBI), J.-P. Beaulieu, A. Cassan (IAP), M. I. Andersen (AIP), J. Donatowicz (Tech. Uni. of Vienna), D. Watson, J. P. U. Fynbo, P. Jakobsson, J. M. Castro Cerón, H. Pedersen (NBI), report:
"We have performed almost daily R-band monitoring of the XRF 050509c field (GCN Circ. 3402, HETE-2 trigger #3751) from May 15 to June 8. No significant rebrightening brighter than R ~ 22.5 has been detected at the afterglow position (GCN Circ. 3425) during the mentioned period.
If XRF 050509c was related to a supernova similar to SN 1998bw, our observations would impose a lower redshift limit of z > 0.4.
A combination of all late images (www.astro.ku.dk/~brian_j/grb/grb050509.95/) reveals a faint (R ~ 24) object coincident with the afterglow position, which we tentatively identify as the host galaxy of XRF 050509c."