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Multifrequency Radio Observations of a SNR in the LMC. The Case of SNR J0527-6549 (DEM L204)

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Author(s): Bozzetto, L. M. | Filipovic, M. D. | Crawford, E. J. | Bojicic, I. S. | Payne, J. L. | Medik, A. | Wardlaw, B. | De Horta, A. Y.

Journal: Serbian Astronomical Journal
ISSN 1450-698X

Volume: 181;
Start page: 43;
Date: 2010;
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Keywords: ISM: supernova remnants | Magellanic Clouds | Radio Continuum: ISM | Polarization | ISM: individual objects: SNR J0527-6549

ABSTRACT
We present a detailed study and results of new Australia Telescope Compact Array (ATCA) observations of supernova remnant SNR J0527-6549. This Large Magellanic Cloud (LMC) object follows a typical supernova remnant (SNR) horseshoe morphology with a diameter of D=(66$imes$58)$pm$1~pc which is among the largest SNRs in the LMC. Its relatively large size indicates older age while a steeper than expected radio spectral index of $alpha$=-0.92$pm$0.11 is more typical of younger and energetic SNRs. Also, we report detections of regions with a high order of polarization at a peak value of $sim$ 54 per cent $pm$ 17 per cent at 6~cm.
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