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28 March 2024
 
  » arxiv » 0707.2815

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Very high energy observations of the BL Lac objects 3C 66A and OJ 287
T. Lindner ; D.S. Hanna ; J. Kildea ; J.Ball ; D.A. Bramel ; J. Carson ; C.E. Covault ; D. Driscoll ; P. Fortin ; D.M. Gingrich ; A. Jarvis ; C. Mueller ; R. Mukherjee ; R.A. Ong ; K. Ragan ; R.A. Scalzo ; D.A. Williams ; J. Zweerink ;
Date 19 Jul 2007
AbstractUsing the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE), we have observed the BL Lac objects 3C 66A and OJ 287. These are members of the class of low-frequency-peaked BL Lac objects (LBLs) and are two of the three LBLs predicted by Costamante and Ghisellini to be potential sources of very high energy (>100 GeV) gamma-ray emission. The third candidate, BL Lacertae, has recently been detected by the MAGIC collaboration. Our observations have not produced detections; we calculate a 99% CL upper limit of flux from 3C 66A of 0.15 Crab flux units and from OJ 287 our limit is 0.52 Crab. These limits assume a Crab-like energy spectrum with an effective energy threshold of 185 GeV.
Source arXiv, 0707.2815
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