Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 2965

CFHTLS optical transient unlikely to be a GRB
2005-01-19T22:03:53Z (19 years ago)
Paul Price at IfA,UH <>
P.A. Price (Institute for Astronomy, University of Hawaii) reports:

Inspection of archival 2MASS images reveals detection of a source
coincident with the position of the transient detected by Malacrino et
al. (GCN #2964) in the CFHTLS.  The source is detected at 4-sigma
significance in the J-band, and 2-sigma in the H-band.

Rough photometry yields: J ~ 17.3 mag, H ~ 16.5 mag, K > 16.1 mag (3
sigma limit).

The J-H colour of this (presumably quiescent) source is consistent with
that of an M dwarf.  These observations suggest that the source is
likely a flaring M star.

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