A new radio continuum study of the large magellanic cloud supernova remnant MC SNR J0519–6902

We present a new radio continuum study of the Large Magellanic Cloud supernova remnant (SNR) MC SNR J0519–6902. With a diameter of ~ 8 pc, this SNR shows a radio ring-like morphology with three bright regions towards the north, east, and south. Its linear polarisation is prominent with average values of 5±1 % and 6±1 % at 5 500 and 9 000 MHz, and we find a spectral index of -0.62±0.02 , typical of a young SNR. The average rotation measure is estimated at -124±83 rad m ⁻² and the magnetic field strength at ~11\,μ G. We also estimate an equipartition magnetic field of 72± 5\,μ G and minimum explosion energy of E _ min = 2.6 ×10⁴⁸ erg. Finally, we identified an H i cloud that may be associated with MC SNR J0519–6902, located in the southeastern part of the remnant, along with a potential wind-bubble cavity.