Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 6407

Subject
GRB070419A: optical observations
Date
2007-05-13T20:24:58Z (17 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Pozanenko (IKI), A. Shulga, A. Volnova (SAI MSU),  B. Hafizov, I.
Asfandiyarov, M. Ibrahimov (MAO) on behalf of larger GRB follow up
collaboration report:

We observed optical afterglow  of GRB070419A (Stamatikos et al, GCN 6302;
Chornock et al. GCN 6304) with 1.5m telescope of  Maidanak observatory
(MAO).  Several exposures in R-band in seeing ~1 arcsec were obtained on
Apr. 17 between (UT) 15:20 - 16:25.  In a combined image the source at
(J2000) RA= 12 10 58.83 DEC= +39 55 34.06 with an error in both coordinates
of 0.15" is compatible with the coordinates of Chornock et al. (GCN 6304)
and Garnavich et al. (GCN 6406).

A photometry of the afterglow using USNO-A2.0 stars  is following:

T0+ ,      Exposure,  R_mag

0.245 d   11x300 s     22.4 +/- 0.3

Our observation is compatible with global power law decay index 0.9
(Garnavich et al. GCN 6406) suggesting no host galaxy contribution in epoch
of our observation.

The  combined image can be found at
http://grb.rssi.ru/GRB070419A/GRB070419A_AZT22_R.jpg

This message may be cited.
Looking for U.S. government information and services? Visit USA.gov