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GCN Circular 3114

Subject

GRB 050318: Magellan optical afterglow identification

Date

2005-03-19T00:53:46Z (20 years ago)

From

Edo Berger at Carnegie Obs <eberger@ociw.edu>

John Mulchaey and Edo Berger (Carnegie Observatories) report:

"On 2005, March 18.995 UT we imaged the BAT error circle of GRB 050318
(GCN 3111Not found
 
 
) with IMACS on the Magellan/Baade telescope in the R-band.  
Within the 6" radius XRT error circle (GCN 3113Not found
 
 
) we find a single bright
object which is not present in the DSS at coordinates (J2000):
        RA  =  03:18:51.0
        DEC = -46:23:44
with an uncertainty of about 0.5" in each coordinate.  We consider this
object to be the optical afterglow of GRB 050318."

[GCN OPS NOTE (19Mar05): Changed the Subject-line from "030518" to "050318".]