A New Feature of the Radio Sky

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Abstract
A broad band of enhanced radio emission is the most notable feature of a new 240 Mc/s survey of part of the galactic halo. The feature sweeps in a roughly circular arc of radius 45° through the constellations of Cetus and Aquarius. It can be traced over more than 70° of sky at galactic latitudes higher than 20°S, and in some respects resembles the well-known belt of radio emission on the other side of the galactic plane known as the North Polar Spur. Physical conditions which might give rise to such features of the halo emission are reviewed in the light of the new observations. An attempt is also made to place an upper limit to the radiation from the ‘Local Supergalaxy’ in the area covered by the survey.

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