GCN Circular 6972
Subject
GRB 071021: Z-band detection
Date
2007-10-22T02:18:51Z (17 years ago)
From
Daniele Malesani at Niels Bohr Inst,Dark Cosmology Center <malesani@astro.ku.dk>
D. Malesani (DARK), S. Piranomonte (INAF/OARm), G. Tagliaferri, G.
Chincarini, S. Covino (INAF/OABr), F. Fiore, L. Stella (INAF/OAR),
report on behalf of the MISTICI collaboration:
We observed the field of GRB 071021 (Sakamoto et al., GCN 6958) with the
8.2m VLT+FORS2 equipped with the z_Gunn filter (effective wavelength:
9100 A; FWHM: 1300 A).
In a coadded image totalling 15 min exposure, we see a weak source at
the coordinates provided by Castro-Tirado et al. (GCNs 6968, 6971).
Our detection would suggest a redshift less than roughly 6.5.
A finding chart is poste at:
http://www.astro.ku.dk/~malesani/GRB/071021/071021_finder.jpg
We acknowledge excellent support from the ESO staff, particularly Hugues
Sana.