Detection of the BL Lac Object H1426+428 at TeV Gamma Ray Energies

Fred Lawrence Whipple Observatory, Harvard-Smithsonian CfA, P.O. Box 97, Amado, AZ 85645 Experimental Physics Department, National University of Ireland, Belfield, Dublin 4, Ireland Department of Physics, University of Leeds, Leeds, LS2 9JT, Yorkshire, England, UK Department of Physics, Washington University, St. Louis, MO 63130 Department of Physics and Astronomy, Iowa State University, Ames, IA 50011 Department of Physics, Purdue University, West Lafayette, IN 47907 Physics Department, Tanta University, Tanta, Egypt Department of Physics, University of Arizona, Tucson, AZ 85721 Physics Department, National University of Ireland, Galway, Ireland Enrico Fermi Institute, University of Chicago, Chicago, IL 60637 High Energy Astrophysics Institute, University of Utah, Salt Lake City, UT 84112 Department of Physics, University of California, Los Angeles, CA 90095 School of Science, Galway-Mayo Institute of Technology, Galway, Ireland Department of Physics, Cork Institute of Technology, Cork, Ireland Department of Physics, Kansas State University, Manhattan, KS 66506 Department of Physics and Astronomy, DePauw University, Greencastle, IN 46135 Physics & Astronomy Department, University of Arkansas at Little Rock, Little Rock, AR 72204