GRB 130215
GCN Circular 14205
Subject
GRB 130215: ROTSE-III Detection of Optical Counterpart
Date
2013-02-15T01:54:24Z (12 years ago)
From
Heather Flewelling at IfA/Hawaii <flewelling.heather@gmail.com>
W. Zheng (UC Berkeley), H. Flewelling (IfA/Hawaii), report on behalf of the
ROTSE collaboration:
ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB 130215
(Swift trigger 548760). The first image was at 01:43:07.3 UT, 697.1 s after
the burst (8.3 s after the GCN notice time). The unfiltered images are
calibrated relative to USNO A2.0. We detect a new object, not visible in
the DSS (second epoch), with coordinates:
02:54:00.7 +13:23:43.7 (J2000), with positional uncertainty of
1" or better
start UT mag mlim(of image)
----------------------------------
01:43:07.3 14.2 16.2
A jpeg image is available at
http://www.rotse.net/images/gsb548760_3b00_img.jpg Note that the object
marked 8 is the candidate in question.
Continuing observations are in progress.
GCN Circular 14206
Subject
Skynet Observations of GRB130215
Date
2013-02-15T02:55:19Z (12 years ago)
From
Aaron LaCluyze at U.North Carolina <lacluyze@email.unc.edu>
A. LaCluyze, J. Haislip, K. Ivarsen, D. Reichart, J. Moore, H. N. Frank, T.
Cromartie, R. Egger, A. Foster, N. Frank, M. Nysewander, A. Oza, E.
Speckhard, A.Trotter, and J. A. Crain report:
Skynet began observing the field of GRB130215A (Swift trigger 548760, GCN
14204) in BVRI beginning ~12 minutes after the burst using four of the
PROMPT telescopes located at CTIO in Chile, and the DSO-14 telescope and
Morehead telescope in North Carolina, USA. A bright, fading source is
detected at the position reported by the ROTSE group (GCN 14205.)
Calibrating to several nearby USNO B1.0/NOMAD stars, we find the following
initial magnitudes:
Filt Time Mag
B 15.4m 15.4
V 15.4m 14.5
R 13.0m 13.8
I 15.5 13.3
The object has set in Chile, but further observations from the Northern
hemisphere telescopes are ongoing.