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arXiv · 1109.3945

Radio continuum observations of LMC SNR J0550-6823

L. M. Bozzetto·M. D. Filipović·E. J. Crawford·J. L. Payne·A. Y. De Horta·M. Stupar
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Abstract

We report on new Australia Telescope Compact Array (ATCA) observations of the Large Magellanic Cloud (LMC) supernova remnant (SNR) J0550-6823 (DEM L328). This object is a typical horseshoe SNR with a diameter of 373" x 282" +- 4" (90 x 68 +- 1), making it one of the largest known SNRs in the Local Group. We estimate a relatively steep radio spectral index of alpha = -0.79 +- 0.27. However, its stronger than expected polarisation of 50% +- 10% is atypical for older and more evolved SNRs. We also note a strong correlation between [Oiii] and radio images, classifying this SNR as oxygen dominant.

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L. M. Bozzetto, M. D. Filipović, E. J. Crawford, J. L. Payne, A. Y. De Horta, M. Stupar. 2011-09-19. Radio continuum observations of LMC SNR J0550-6823. https://arxiv.org/abs/1109.3945

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