WHY DOES GEMINGA HAVE SUCH A LOW RADIO LUMINOSITY

The gamma-ray source Geminga, whose radio emission has recently been d etected, has a very low integrated radio luminosity (L similar to 10(2 6) erg s(-1)), making it one of the faintest radio pulsars. The emissi on of such low-intensity radio emission from a young pulsar can be und erstood if it is generated near the light cylinder by the synchrotron mechanism. An additional factor weakening the radio emission is that t he magnetic axis of the Geminga pulsar is at a small inclination to it s rotation axis (i.e., Geminga is a nearly coaxial rotator).