Multifrequency study of SNR J0533-7202, a new supernova remnant in the LMC

L. M. Bozzetto*, M. D. Filipović, E. J. Crawford, M. Sasaki, P. Maggi, F. Haberl, D. Urǒsević, J. L. Payne, A. Y. De Horta, M. Stupar, R. Gruendl, J. Dickel

*Corresponding author for this work

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We present a detailed study of Australia Telescope Compact Array observations of a newly discovered Large Magellanic Cloud supernova remnant (SNR), SNR J0533-7202. This object follows a horseshoe morphology, with a size of 37 pc × 28 pc (1 pc uncertainty in each direction). It exhibits a radio spectrum with the intrinsic synchrotron spectral index of α = -0.47 ± 0.06 between 73 and 6 cm. We report detections of regions showing moderately high fractional polarization at 6 cm, with a peak value of 36 ± 6 per cent and a mean fractional polarization of 12 ± 7 per cent.We also estimate an average rotation measure across the remnant of -591 rad m-2. The current lack of deep X-ray observation precludes any conclusion about high-energy emission from the remnant. The association with an old stellar population favours a thermonuclear supernova origin of the remnant.

Original languageEnglish
Pages (from-to)2177-2181
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Volume432
Issue number3
DOIs
Publication statusPublished - Jun 2013

Keywords

  • ISM:supernova remnants
  • Magellanic clouds
  • Polarization
  • Radio continuum:ISM
  • X-rays:ISM

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    Bozzetto, L. M., Filipović, M. D., Crawford, E. J., Sasaki, M., Maggi, P., Haberl, F., ... Dickel, J. (2013). Multifrequency study of SNR J0533-7202, a new supernova remnant in the LMC. Monthly Notices of the Royal Astronomical Society, 432(3), 2177-2181. https://doi.org/10.1093/mnras/stt568