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 7944

Subject
GRB 080703: GROND Upper Limits
Date
2008-07-04T18:25:08Z (16 years ago)
From
Christian Clemens at MPE <cclemens@mpe.mpg.de>
C. Clemens, S. Loew, J. Greiner, A. Yoldas, T. Kruehler (all MPE Garching), A. 
Kupcu Yoldas (ESO) and G. Szokoly (Eoetvoes Univ., Budapest) report on behalf 
of the GROND team:

We observed the field of GRB 080703 (Swift trigger 315819; Ziaeepour et al., 
GCN #7936) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, 
PASP 120, 405) mounted at the 2.2 m ESO/MPI telescope at La Silla Observatory 
(Chile).

Observations started at 23:04 UT on July 3rd, 2008, 4.1 hrs after the GRB 
trigger with 4.7 min of effective exposures in g'r'i'z' and 8.0 min in JHK, 
and were performed at an average seeing of 1.8" during astronomical twilight.

We do not detect any object within the 0.5'' Swift-UVOT error circle reported 
by Ward & Ziaeepour (GCN #7941) to the following upper limits:

g' > 22.1 mag,
r' > 22.6 mag,
i' > 21.8 mag,
z' > 21.3 mag,
J > 19.3 mag,
H > 18.1 mag and
K > 17.0 mag.

These upper limits are calibrated against USNO-B1 as well as 2MASS field 
stars.
Looking for U.S. government information and services? Visit USA.gov