New Astronomy Reviews; Summary Talk at the "2nd VERITAS Symposium on TeV Astrohysics of Extragalactic Sources", April 24-26, 2003
astro-ph/0310391

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EXTRAGALACTIC SOURCES OF TeV GAMMA RAYS: A SUMMARY

D. Horan a and T.C. Weekes a


a Whipple Observatory, Harvard-Smithsonian Center for Astrophysics,
P.O. Box 97, Amado, AZ 85645-0097 USA


Abstract. The development of techniques whereby gamma rays of energy 100 GeV and above can be studied from the ground, using indirect, but sensitive, techniques has opened up a new area of high energy photon astronomy. The most exciting result that has come from these is the detection of highly variable fluxes of TeV gamma rays from the relativistic jets in nearby AGN. The recent detection of signals from a starburst galaxy and from a radio galaxy opens the possibility that the extragalactic emission of TeV gamma rays is a ubiquitous phenomenon. Here we attempt to summarize the properties of the sources detected so far.


Key words: gamma-ray astronomy; atmospheric Cherenkov radiation; AGN.


Table of Contents

INTRODUCTION

STATUS OF TEV GAMMA-RAY ASTRONOMY c. 2003

EXTRAGALACTIC TEV SOURCES

SOURCE NARRATIVE

FUTURE PROSPECTS

REFERENCES

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