GCN Circular 22648
Subject
GRB 180418A: LCO FTN afterglow confirmation
Date
2018-04-18T07:47:13Z (6 years ago)
From
Cristiano Guidorzi at Ferrara U,Italy <guidorzi@fe.infn.it>
C. Guidorzi, R. Martone (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell
(U. Bath), A. Gomboc (U. Nova Gorica), I.A. Steele (LJMU) on behalf of a
large collaboration report:
The LCO 2-m Faulkes Telescope North (Hawaii) began observing Swift short
GRB 180418A (D'Elia et al. GCN 22646) on April 18, 07:18:19 UT (34
minutes since the GRB) with the SDSS-I filter. We clearly detect the
optical afterglow (Zheng et al. GCN 22647) with the following magnitude:
Mid time since GRB���� Exp������� Filter�������� Magnitude
(hrs)����������������� (s)
------------------------------------------------------------
0.62������������������ 5x60������ SDSS-I�������� 19.2 +- 0.1
------------------------------------------------------------
as calibrated against nearby SDSS objects.