New ASKAP Radio Supernova Remnants and Candidates in the Large Magellanic Cloud

Journal
Date Issued
2022
Author(s)
Luke Bozzetto
•
Pierre Maggi
•
Roland Kothes
•
Andrew Hopkins
•
F Haberl
•
Jacco van Loon
•
Warren Reid
•
Simone Riggi
•
•
Shi Dai
•
Manami Sasaki
•
Ivan Bojicic
•
Luke Barnes
•
Maddie Ghavam
•
Tracey Hill
•
Chris Matthew
•
Federico Zangrandi
•
Clara Pennock
•
Evan Crawford
•
L. Chomiuk
•
Ioanna Leonidaki
•
Dejan Urosevic
•
Thomas Jarrett
•
Chandreyee Maitra
•
Emil Lenc
•
Robert Brose
•
Gavin Rowell
•
Hidetoshi Sano
•
Miroslav Filipovic
•
Jeffrey Payne
•
Patrick Kavanagh
•
Sean Points
•
Samar Safi-Harb
•
Rami Alsaberi
DOI
Abstract
We present a new Australian Square Kilometre Array Pathfinder (ASKAP) sample of 14 radio supernova remnants (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 multifrequency 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 multifrequency 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 lower density environments in which SNe type Ia explode inside a previously excavated interstellar medium.
Volume
518
Issue
2
Start page
2574
Uri
Url
Issn Identifier
0035-8711
Ads BibCode
2023MNRAS.518.2574B
Rights
open.access
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