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arXiv · 2504.11746

A New Radio Continuum Study of the Large Magellanic Cloud Supernova Remnant MC SNR J0519-6902

Rami Z. E. Alsaberi·Miroslav D. Filipovic·Hidetoshi Sano·Shi Dai·Frank Haberl·Patrick J. Kavanagh·Denis Leahy·Pierre Maggi·Gavin Rowell·Manami Sasaki·Ivo R. Seitenzahl·Dejan Urosevic·Jeffrey Payne·Zachary J. Smeaton·Sanja Lazarevic
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Abstract

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 toward the north, east, and south. Its linear polarisation is prominent with average values of 5 +- 1% and 6 +- 1% at 5500 and 9000 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 muG. We also estimate an equipartition magnetic field of 72 +- 5 muG and minimum explosion energy of Emin = 2.6x1048 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.

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Rami Z. E. Alsaberi, Miroslav D. Filipovic, Hidetoshi Sano, Shi Dai, Frank Haberl, Patrick J. Kavanagh, Denis Leahy, Pierre Maggi, Gavin Rowell, Manami Sasaki, Ivo R. Seitenzahl, Dejan Urosevic, Jeffrey Payne, Zachary J. Smeaton, Sanja Lazarevic. 2025-04-16. A New Radio Continuum Study of the Large Magellanic Cloud Supernova Remnant MC SNR J0519-6902. https://arxiv.org/abs/2504.11746

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