TITLE: GCN CIRCULAR NUMBER: 42270 SUBJECT: GRB 250821A: VLT/FORS2 Optical Observation DATE: 25/10/14 21:28:42 GMT FROM: Roberto Ricci at INAF-IRA <ricci@ira.inaf.it> Muskan Yadav (U Rome), Roberto Ricci (U Rome), Yu-Han Yang (U Rome), Rosa L. Becerra (U Rome) and Eleonora Troja (U Rome) report on behalf of the ERC BHianca team: We observed the field of GRB 251014A detected by Fermi (Fermi Team et al., GCN 42237) and Swift/BAT (Ambrosi et al., GCN 42238) with the FORS2 imager on the ESO VLT UT1 (Antu). Observations began 7.55 hours after the trigger and were carried out in the R filter with an average airmass of ~1.5. Having no reference image deep enough to compare with our science image, at this stage we are not able to determine whether there are new sources down to the limiting magnitude probed by FORS2. Further observations or an arcsec X-ray counterpart are required to make such a claim. We thank the staff at the VLT for the rapid execution of these observations. View this GCN Circular online at https://gcn.nasa.gov/circulars/42270. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...