GCN Circular 4880
Subject
GRB060313: SSO 40inch Observations
Event
Date
2006-03-14T00:24:08Z (20 years ago)
From
Brian Schmidt at RSAA, ANU (MSSSO) <brian@mso.anu.edu.au>
B. Schmidt and D. Bayliss (ANU), on behalf of a larger collaboration
report,
"We have obtained a series of R-band images with 40inch telescope + WFI
starting at UT Mar 13.358 of GRB 060313 (Pagani et al. GCN 4867) of the
OT-candidate of Levan and Hjorth (GCN 4871).
Comparison of the image with those taken with Gemini-S (Schmidt et al.
GCN 4876)
shows the OT-candidate has faded by at least 0.4 magnitudes (95%
confidence).
Although not detected, using the USNOA2 star located at
RA=04:26:28.906 DEC=-10:51:00.16 (J2000) R=18.1
as a reference, we estimate the OT to be fainter than R=20.5 (95%
confidence). This variability confirms the association of the OT with
GRB060313."