GCN Circular 19230
Subject
GRB 160325A: afterglow confirmation
Event
Date
2016-03-25T17:22:35Z (10 years ago)
From
Andrea Melandri at INAF-OAB <andrea.melandri@brera.inaf.it>
A. Melandri, D. Fugazza (INAF-OAB), M. De Pasquale (MSSL-UCL) report on behalf of a larger collaboration:
Further analysis of REM near-infrared observations of the field of of GRB 160325A (Sonbas et al., GCN 19222) showed that the source reported as candidate afterglow in our earlier imaging (Fugazza & Melandri, GCN 19223; McCauley & Sonbas, GCN 19228) has faded in the JHK filters. Observations cover the time interval bewteen ~1 and 120 minutes after the burst event.
The light curve has an initial decay of alpha1 ~ 0.45, and after 10 minutes it steepens to alpha2 ~ 1.5. The fading nature confirms that this source is the afterglow of GRB 160325A.