GCN Circular 11179
Subject
GRB 100901A: ROTSE-III Detection
Date
2010-09-02T19:20:08Z (14 years ago)
From
Shashi Bhushan Pandey at ROTSE <shaship@umich.edu>
S. B. Pandey and W. Zheng (U Mich), report on behalf of the ROTSE
collaboration:
Due to bad weather conditions, the ROTSE-3a telescope at Siding Springs
Observatory, Australia did not respond to GRB 100901A (Swift trigger
433065,
Immler S. et al., GCN 11159). Automated re-pointing of ROTSE-3c at the
H.E.S.S. site at Mt. Gamsberg, Namibia and ROTSE-3b at the McDonald
Observatory, Texas observed the optical afterglow starting ~ 8.6 to 22.0
hours after the burst.
The optical afterglow was detected in all the stacked frames. The optical
afterglow candidate appears to decay with a power-law index of ~1.2 at
later epochs. Further imaging is ongoing.