Published in Publications of the Astronomical Society of the
Pacific, 111: 1193-1222, 1999 October
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astro-ph/9906501
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Abstract. We present a review of the current status of very high energy -ray astronomy. The development of the atmospheric Cerenkov imaging technique for ground-based -ray astronomy has led to a rapid growth in the number of observatories. The detection of TeV -rays from active galactic nuclei was unexpected and is providing new insights into the emission mechanisms in the jets. Next-generation telescopes are under construction and will increase dramatically the knowledge available at this extreme end of the cosmic electromagnetic spectrum.
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