Multifrequency study of SNR J0533-7202, a new supernova remnant in the LMC
arXiv:1304.0495 · doi:10.1093/mnras/stt568
Abstract
We present a detailed study of Australia Telescope Compact Array (ATCA) observations of a newly discovered Large Magellanic Cloud (LMC) supernova remnant (SNR), SNR J0533-7202. This object follows a horseshoe morphology, with a size 37 pc x 28 pc (1-pc uncertainty in each direction). It exhibits a radio spectrum with the intrinsic synchrotron spectral index of alpha= -0.47+-0.06 between 73 and 6 cm. We report detections of regions showing moderately high fractional polarisation at 6 cm, with a peak value of 36+-6% and a mean fractional polarisation of 12+-7%. 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.
6 pages, 5 figures accepted to Monthly Notices of the Royal Astronomical Society
References in corpus (6)
- A new Cepheid distance to the maser-host galaxy NGC 4258 and its implications for the Hubble Constant
- Modified equipartition calculation for supernova remnants
- Multi-frequency study of the Large Magellanic Cloud Supernova Remnant J0529-6653 near Pulsar B0529-66
- Multi-Frequency Study of Supernova Remnants in the Large Magellanic Cloud. The case of LMC SNR J0530-7007
- Multi-frequency study of Local Group Supernova Remnants The curious case of the Large Magellanic Cloud SNR J0528-6714
- Radio continuum observations of LMC SNR J0550-6823
Cited by in corpus (20)
- Radio emission from Supernova Remnants
- The population of X-ray supernova remnants in the Large Magellanic Cloud
- Statistical Analysis of Supernova Remnants in the Large Magellanic Cloud
- On the radio spectra of supernova remnants
- Four new X-ray-selected supernova remnants in the Large Magellanic Cloud
- New Optically Identified Supernova Remnants in the Large Magellanic Cloud
- Multi-frequency study of a new Fe-rich supernova remnant in the Large Magellanic Cloud, MCSNR J0508-6902
- Radio-continuum study of Large Magellanic Cloud Supernova Remnant J0509-6731
- HFPK 334: An unusual Supernova Remnant in the Small Magellanic Cloud
- ALMA CO Observations of Supernova Remnant N63A in the Large Magellanic Cloud: Discovery of Dense Molecular Clouds Embedded within Shock-Ionized and Photoionized Nebulae
- Optical supernova remnants in nearby galaxies and their influence on star formation rates derived from H emission
- Multi-frequency observations of a superbubble in the LMC: The case of LHA 120-N 70
- Two evolved supernova remnants with newly identified Fe-rich cores in the Large Magellanic Cloud
- Multi-frequency study of DEM L299 in the Large Magellanic Cloud
- Radio Emission from Interstellar Shocks: Young Type Ia Supernova Remnants and the Case of N 103B in the Large Magellanic Cloud
- XMM-Newton observation of SNR J0533-7202 in the Large Magellanic Cloud
- Optical discovery and multiwavelength investigation of supernova remnant MCSNR J0512-6707 in the Large Magellanic Cloud
- Radio-continuum study of MCSNR J0536-7038 (DEM L249)
- A new look at the integrated radio/microwave continuum spectrum of Galactic supernova remnant IC443
- On the Determination of the Evolutionary Status of Supernova Remnants from Radio Observation Data