Radio-continuum observations of small, radially polarised supernova remnant j0519-6902 in the large magellanic cloud

Abstract

We report on new Australian Telescope Compact Array (ATCA) observations of SNR J0519-6902. The Supernova Remnant (SNR) is small in size (~8 pc) and exhibits a typical SNR spectrum with α = -0.53 ± 0.07, with steeper spectral indices towards the northern limb of the remnant. SNR J0519-6902 con-tains a low level of radially orientated polarisation at wavelengths of 3 and 6 cm, which is typical of younger SNRs. A fairly strong magnetic field was estimated to ~171 μG. The remnant appears to be the result of a typical Type Ia super-nova, sharing many properties with another small and young Type Ia LMC SNR, J0509-6731.