ON THE ORIGIN OF TEN CENTIMETER RADIATION FROM THE POLAR AURORA

Abstract
Short-lived bursts of 10 cm. radiation from auroral displays have been received by radar equipment. The sources of continuous radiation from a partially ionized medium are briefly discussed. From a knowledge of the constants of the equipment used it is deduced that the power density at the receiver is at least 2 × 10−10 watts per (meter)2, and it seems that the most likely source of this radiation is a plasma oscillation of the ionized volume associated with the auroral display. If this is so, the electron density in at least localized regions must be of the order 1011 per cm.3

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