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Detection of an optical flare from 3EG J1429-4217

ATEL # 2103; M. Hauser (LSW Heidelberg), H. Hagen (Sternwarte Hamburg), S. Wagner (LSW Heidelberg) on behalf of the ATOM team
on 29 Jun 2009; 14:51 UT
Password Certification: Stefan J. Wagner (

Subjects: Optical, >GeV, Request for Observations, AGN, Quasars
Referred to by ATEL #: 2104

Most recent measurement with the Automatic Telescope for Optical Monitoring (ATOM), operated by the H.E.S.S. collaboration and located next to the H.E.S.S. IACT array in Namibia, shows significant optical flaring activity of the source 3EG J1429-4217, associated with PKS 1424-418 (RA=14:27:56.3, Dec=-42:06:19.4 (J2000), z=1.52)).

The source was fainter than 18mag (R) between July 2008 and beginning of May 2009. After this date, the flux started to increase by more than a factor of ten up to R=15.9mag on June 28. Multifrequency observations of this outburst are encouraged.

ATOM is monitoring this source since July 2008 as a part of its monitoring program of gamma-ray sources. The flux reported here is the highest ATOM measured flux of this source.

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R. E. Rutledge , Editor
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