Radio continuum observations of LMC SNR J0550-6823
We report on new Australia Telescope Compact Array (ATCA) observations of the Large Magellanic Cloud (LMC) supernova remnant (SNR) J0550-6823 (DEM L328). This object is a typical horseshoe SNR with a diameter of 373" × 282" ± 4" (90 × 68 ± 1 pc), making it one of the largest known SNRs in the Local Group. We estimate a relatively steep radio spectral index of α = -0.79 ± 0.27. However, its stronger than expected polarisation of 50% ± 10% is atypical for older and more evolved SNRs. We also note a strong correlation between [O III] and radio images, classifying this SNR as oxygen dominant.
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| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Universidad Nacional Autónoma de México, Instituto de Astronomía
2012
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| Online Access: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0185-11012012000100003 |
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