Whipple Observations of BL Lac Objects
Abstract
Only BL Lac objects have been detected as extragalactic sources of very high energy (E > 300 GeV) gamma rays. Using the Whipple Observatory Gamma-ray Telescope, we have attempted to detect more BL Lacs using three approaches. First, we have conducted surveys of nearby BL Lacs, which led to the detections of Mrk 501 and 1ES 2344+514. Second, we have observed X-ray bright BL Lacs when the RXTE All-Sky Monitor identifies high state X-ray emission in an object, in order to efficiently detect extended high emission states. Third, we have conducted rapid observations of several BL Lacs and QSOs located close together in the sky to search for very high flux, short time-scale flare states such as have been seen from Mrk 421. We will present the results of a survey using the third observational technique.
Cite
@article{arxiv.astro-ph/9907263,
title = {Whipple Observations of BL Lac Objects},
author = {M. D'Vali and I. H. Bond and S. M. Bradbury and J. H. Buckley and A. M. Burdett and D. A. Carter-Lewis and M. Catanese and M. F. Cawley and D. J. Fegan and S. J. Fegan and J. P. Finley and J. A. Gaidos and T. A. Hall and A. M. Hillas and J. Knapp and F. Krennrich and S. Le Bohec and R. W. Lessard and C. Masterson and S. D. Myles and J. Quinn and H. J. Rose and F. W. Samuelson and G. H. Sembroski and V. V. Vassiliev and T. C. Weekes},
journal= {arXiv preprint arXiv:astro-ph/9907263},
year = {2007}
}
Comments
4 pages, 2 figures, to be published in the proceedings of 26th International Cosmic Ray Conference (Salt Lake City, 1999)