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

GCN Circular 14592

GRB 130427A: Tautenburg afterglow observations
2013-05-06T22:41:33Z (11 years ago)
Alexander Kann at TLS Tautenburg <>
D. A. Kann, B. Stecklum, and F. Ludwig (TLS Tautenburg) report:

We observed the optical afterglow (Elenin et al., GCN 14450) of the nearby
(Levan et al., GCN 14455), extremely bright GRB 130427A (Maselli et al.,
GCN 14448; Zhu et al., GCN 14471; von Kienlin, GCN 14473; Golenetskii et
al., GCN 14487) with the 1.34m Schmidt telescope of the Thueringer
Landessternwarte Tautenburg equipped with a 4k CCD camera under good
weather conditions. We obtained 3 x 600 sec frames in the Rc band. The
afterglow is detected in each frame.

Using the nearby star given in Rumyantsev et al. (GCN 14582), we derive a
preliminary magnitude of Rc = 20.27 +/- 0.07 at 8.55173 days after the

This value is in good agreement with detections from the last few days
(Kuroda et al., GCN 14534; Rumyantsev et al., GCN 14582). The afterglow
does not yet show clear signs of flattening associated with either a
rising supernova component or a significant contribution from the
underlying host galaxy.

This message may be cited.
Looking for U.S. government information and services? Visit