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

doi:10.1093/mnras/stt568

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 journal › Article › peer-review

21 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 language	English
Pages (from-to)	2177-2181
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society
Volume	432
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stt568
Publication status	Published - Jun 2013

Keywords

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

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

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.",

keywords = "ISM:supernova remnants, Magellanic clouds, Polarization, Radio continuum:ISM, X-rays:ISM",

author = "Bozzetto, {L. M.} and Filipovi{\'c}, {M. D.} and Crawford, {E. J.} and M. Sasaki and P. Maggi and F. Haberl and D. Urǒsevi{\'c} and Payne, {J. L.} and {De Horta}, {A. Y.} and M. Stupar and R. Gruendl and J. Dickel",

year = "2013",

month = jun,

doi = "10.1093/mnras/stt568",

language = "English",

volume = "432",

pages = "2177--2181",

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AU - Bozzetto, L. M.

AU - Filipović, M. D.

AU - Crawford, E. J.

AU - Sasaki, M.

AU - Maggi, P.

AU - Haberl, F.

AU - Urǒsević, D.

AU - Payne, J. L.

AU - De Horta, A. Y.

AU - Stupar, M.

AU - Gruendl, R.

AU - Dickel, J.

PY - 2013/6

Y1 - 2013/6

N2 - 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.

AB - 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.

KW - ISM:supernova remnants

KW - Magellanic clouds

KW - Polarization

KW - Radio continuum:ISM

KW - X-rays:ISM

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DO - 10.1093/mnras/stt568

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JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

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ER -

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

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Keywords

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