MULTIFREQUENCY RADIO OBSERVATIONS OF A SNR IN THE LMC. THE CASE OF SNR J0527–6549 (DEM L204)

Serbian Astronomical Journal

article

L. M. Bozzetto¹  M. D. Filipovi´¹  E. J. Crawford¹  I. S. Bojiˇci´¹  J. L. Payne¹  A. Mendik¹  B. Wardlaw¹  A. Y. De Horta¹ 

[1] School of Computing and Mathematics, University of Western Sydney Locked Bag 1797

关键词: ISM: supernova remnants;    Magellanic Clouds;    Radio Continuum: ISM;    Polarization;    ISM: individual objects: SNR J0527–6549;   

DOI  :  10.2298/SAJ1081043B

来源: Astronomical Observatory, Department of Astronomy, Belgrade

【 摘 要 】

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=(66×58)±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 α=– 0.92±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 ∼54%±17% at 6 cm.

【 授权许可】

CC BY-NC-ND