Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 18898

Subject
GRB 160117B: further NOT optical observations of the afterglow
Date
2016-01-19T15:16:17Z (8 years ago)
From
Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst <malesani@dark-cosmology.dk>
D. Malesani (DARK/NBI), D. Xu (NAOC/CAS), C.E. Martinez-Vazquez 
(IAC-ULL), and P. Jakobsson (Univ. Iceland) report on behalf of a larger 
collaboration.

We observed again the optical counterpart of GRB 160117B (Sonbas et al., 
GCN 18875), using the NOT equipped with the AlFOSC camera. Our 
observation was carried out in the R band and was composed of 4x300 s 
exposures, with mean time January 19.10 UT (1.52 days after the GRB).

Compared to our previous observation (Malesani et al., GCN 18884), we 
find a decay slope alpha = 1.10 +- 0.05 (assuming a single power-law 
decay F propto t^-alpha). This decay is steeper than what reported at 
early time by Kruehler et al. (GCN 18878).
Looking for U.S. government information and services? Visit USA.gov