Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 17340

GRB 150120B: FTN early optical light curve
2015-01-21T14:51:41Z (9 years ago)
Cristiano Guidorzi at Ferrara U,Italy <>
C. Guidorzi, S. Dichiara (U. Ferrara), C.G. Mundell (LJMU),
A. Gomboc (U. Ljubljana) on behalf of a large collaboration report:

The 2-m Faulkes Telescope North observed Swift GRB150120B
(D'Elia et al. GCN 17314; Perley GCN 17315) from 18 to 100 minutes
since the burst trigger time with SDSS r and i filters.
Both light curves are fitted with a power-law with a decay index
alpha=0.8 +- 0.1. A comparison with the observations at later times
(Perley GCN 17335; Wiseman et al. GCN 17336; Pandey GCN 17337;
Xin et al. GCN 17339) suggests that a steepening of the decay
must have occurred between ~2e4 and ~6e4 s.
Looking for U.S. government information and services? Visit