Young supernovae in the starbust galaxy M82

Abstract
MERLIN observations at frequencies of 408, 1666 and 4995 MHz reveal 18 compact (< 0.25 arcsec) radio sources within the central few hundred parsecs of M82. M82 is well known as a ‘starburst’ galaxy, and it is probable that these objects are either radio supernovae or young supernova remnants. The distribution of radio sources appears asymmetric with respect to the centre of the galaxy, and we suggest that this is due to the current region of star formation lying within a molecular ring.

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