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Preprint A/12

Multifrequency study of the Large Magellanic Cloud supernova remnant J0529-6653 near pulsar B0529-66

Bozzetto, L. M. (1); ... Sasaki, M. (2); et al.

(1) University of Western Sydney
(2) IAAT

MNRAS 420 (2012), 2588

Abstract. We report the Australia Telescope Compact Array (ATCA) and ROSAT detection of supernova remnant (SNR) J0529-6653 in the Large Magellanic Cloud (LMC) which is positioned in the projected vicinity of the known radio pulsar PSR B0529-66. In the radio continuum frequencies, this LMC object follows a typical SNR structure of a shell morphology with brightened regions in the south-west. It exhibits an almost circular shape of D= 33 × 31 pc (1-pc uncertainty in each direction) and radio spectral index of alpha=-0.68 ± 0.03 - typical for mid-age SNRs. We also report detection of polarized regions with a peak value of about 17 ± 7 per cent at 6 cm. An investigation of ROSAT images produced from merged Position Sensitive Proportional Counter (PSPC) data reveals the presence of extended X-ray emission coincident with the radio emission of the SNR. In X-rays, the brightest part is in the north-east. We discuss various scenarios with regard to the SNR-pulsar association with emphasis on t he large age difference, lack of a pulsar trail and no prominent point-like radio or X-ray source.
Key words: pulsars: general, ISM: supernova remnants, Magellanic Clouds

Astrophysics (astro-ph): 1111.6649

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