Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 8099

GRB 080810: Liverpool and Faulkes North observations
2008-08-12T15:32:08Z (16 years ago)
Cristiano Guidorzi at INAF-OAB <>
C. Guidorzi (INAF-OAB), D. Bersier (LJMU) and N. Tanvir (U. Leicester)
report on behalf of a larger collaboration:

We observed GRB 080810 (Page et al. GCN Circ. 8080) with the 2 m Liverpool
and Faulkes North telescopes starting on August 11 (23:34:09 UT) and
12 (13:14:49 UT), respectively, with r' and i' filters.
We clearly detect the afterglow with the following magnitudes:

Telescope   Filter  T_mid[hr]   Exposure[s]      Mag
LT          i'        34.657       6x300       20.01 � 0.06
LT          r'        39.525       6x300       20.78 � 0.05
FTN         i'        48.367       5x300       20.38 � 0.04

The calibration was performed using nearby USNOB1 stars as described
in our previous report (Guidorzi et al. GCN Circ. 8093).
Combining with our previous observation, we derive a power-law index
of 0.94 � 0.05 from 15 to 48 hr post burst, thus confirming the
flattening of the optical decay, in agreement with Galeev et al.
(GCN Circ. 8098).
Looking for U.S. government information and services? Visit