Back

GCN Circular 4

Subject

GRB 971024: Refined analysis by USNOFS Observations

Date

1997-10-27T00:00:00Z (27 years ago)

Edited On

2024-07-04T22:06:17Z (22 days ago)

From

Jeffrey A Munn at USNO/USRA <jam@nofs.navy.mil>

Edited By

Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of Tyler Barna at University of Minnesota <tylerpbarna@gmail.com>

GRB971024                                                              #004

We reobserved the entire 90% confidence RXTE_ASM localization
of GRB971024 (Trigger No. 6448, GCN notice of 24 Oct 97 22:41:47 UT)
with the USNO, Flagstaff Station 1.0-m telescope in the R band, 48 hours
after our first set of observations (which were obtained 14-14.5 hours
after the GRB event).  The two sets of frames (both approximately as deep as
the DSS in this region) were blinked against each other.  No significantly
variable objects (approx.  1 mag) were detected to approximately R = 19
(in our previous notice, the first set of frames were blinked against DSS,
and no significantly brighter objects in our frames were found).

This message is citable in publications.

J.A. Munn, F.J. Vrba, A.A. Henden, U.S. Naval Observatory, Flagstaff Station