학술논문
New ASKAP Radio Supernova Remnants and Candidates in the Large Magellanic Cloud
Document Type
Working Paper
Author
Bozzetto, Luke M.; Filipović, Miroslav D.; Sano, H.; Alsaberi, R. Z. E.; Barnes, L. A.; Bojičić, I. S.; Brose, R.; Chomiuk, L.; Crawford, E. J.; Dai, S.; Ghavam, M.; Haberl, F.; Hill, T.; Hopkins, A. M.; Ingallinera, A.; Jarrett, T.; Kavanagh, P. J.; Koribalski, B. S.; Kothes, R.; Leahy, D.; Lenc, E.; Leonidaki, I.; Maggi, P.; Maitra, C.; Matthew, C.; Payne, J. L.; Pennock, C. M.; Points, S.; Reid, W.; Riggi, S.; Rowell, G.; Sasaki, M.; Safi-Harb, S.; van Loon, J. Th.; Tothill, N. F. H.; Urošević, D.; Zangrandi, F.
Source
Subject
Language
Abstract
We present a new Australian Square Kilometre Array Pathfinder (ASKAP) sample of 14 radio Supernova Remnant (SNR) candidates in the Large Magellanic Cloud (LMC). This new sample is a significant increase to the known number of older, larger and low surface brightness LMC SNRs. We employ a multi-frequency search for each object and found possible traces of optical and occasionally X-ray emission in several of these 14 SNR candidates. One of these 14 SNR candidates (MCSNR J0522-6543) has multi-frequency properties that strongly indicate a bona fide SNR. We also investigate a sample of 20 previously suggested LMC SNR candidates and confirm the SNR nature of MCSNR J0506-6815. We detect lower surface brightness SNR candidates which were likely formed by a combination of shock waves and strong stellar winds from massive progenitors (and possibly surrounding OB stars). Some of our new SNR candidates are also found in a lower density environments in which SNe type Ia explode inside a previously excavated interstellar medium (ISM).
Comment: accepted for publication in MNRAS, this version corrects arXiv metadata only
Comment: accepted for publication in MNRAS, this version corrects arXiv metadata only