A SURVEY OF THE NORTHERN SKY FOR TeV POINT SOURCES

A search for steady TeV point sources anywhere in the northern sky has been made with data from the Milagrito air-shower particle detector. Over 3 × 109 events, collected from 1997 February to 1998 May, have been used in this study. No statistically significant excess above the background from the isotropic flux of cosmic rays was found for any direction of the sky with declination between -5° and 717. Upper limits are derived for the photon flux above 1 TeV from any steady point source in the northern sky.