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

GCN Circular 4648

GRB 060203: IR Counterpart
2006-02-04T04:31:02Z (18 years ago)
Josh Bloom at UC Berkeley <>
J. S. Bloom, K. Alatalo (UCB) and C. Blake (Harvard) report:

"Starting at 2006-Feb-04 01h41m09 UT we began observing the field of =20
GRB 060203 (GCN 4641) with PAIRITEL. We analyzed the mosaics =20
constructed from the first 918 seconds. Consistent with the XRT =20
position (GCN 4644, 4641) and the suggested OT (GCN 4643, 4645, =20
4646), we find a bright IR counterpart in JHKs with preliminary =20

J   =3D 17.90 =B1  0.05
H  =3D 17.20 =B1 0.06
Ks =3D  16.18 =B1  0.07

Observations continue."

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