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We present a detailed radio, X-ray and optical study of a newly discovered Large Magellanic Cloud (LMC) supernova remnant (SNR) which we denote MCSNR J0508-6902. Observations from the Australian Telescope Compact Array (ATCA) and the…

We present a new multi-wavelength study of supernova remnant (SNR) B0513-692 in the Large Magellanic Cloud (LMC). The remnant also has a strong, superposed, essentially unresolved, but unrelated radio source at its north-western edge,…

天体物理学 · 物理学 2008-11-26 I. S. Bojicic , M. D. Filipovic , Q. A. Parker , J. L. Payne , P. A. Jones , W. Reid , A. Kawamura , Y. Fukui

We present new Australia Telescope Compact Array (ATCA) radio-continuum and XMM-Newton/Chandra X-ray Observatory (CXO) observations of the unusual supernova remnant HFPK 334 in the Small Magellanic Cloud (SMC). The remnant follows a shell…

高能天体物理现象 · 物理学 2015-06-19 E. J. Crawford , M. D. Filipović , R. L. McEntaffer , T. Brantseg , K. Heitritter , Q. Roper , F. Haberl , D. Urosević

We report on new Australian Telescope Compact Array (ATCA) observations of SNR J0519-6902. The Supernova Remnant (SNR) is small in size (~8 pc) and exhibits a typical SNR spectrum of alpha = -0.53 +- 0.07, with steeper spectral indices…

星系天体物理 · 物理学 2017-08-23 L. M. Bozzetto , M. D. Filipović , D. Urošević , E. J. Crawford

We report the extragalactic radio-continuum detection of 15 planetary nebulae (PNe) in the Magellanic Clouds (MCs) from recent Australia Telescope Compact Array+Parkes mosaic surveys. These detections were supplemented by new and high…

宇宙学与河外天体物理 · 物理学 2015-05-13 M. D. Filipović , M. Cohen , W. A. Reid , J. L. Payne , Q. A. Parker , E. J. Crawford , I. S. Bojičić , A. Y. De Horta , A. Hughes , J. Dickel , F. Stootman

We present three rare and striking extragalactic radio sources discovered through visual inspection of low-frequency continuum maps from LoTSS DR2 and TGSS by the RAD@home citizen-science collaboratory. The first, RAD J131346.9+500320, is…

星系天体物理 · 物理学 2025-10-03 Ananda Hota , Pratik Dabhade , Prasun Machado , Joydeep Das , Aarti Muley , Arundhati Purohit

We present a high-resolution radio-continuum view and a multi-frequency analysis of the Large Magellanic Cloud (LMC) Supernova Remnant (SNR) J0450.4-7050, which we give the nickname Veliki. These high-resolution observations reveal a larger…

The Large Magellanic Cloud (LMC) is rich in supernova remnants (SNRs) which can be investigated in detail with radio, optical and X-ray observations. SNR J0453-6829 is an X-ray and radio-bright remnant in the LMC, within which previous…

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) ob ject follows a typical supernova remnant (SNR) horseshoe…

宇宙学与河外天体物理 · 物理学 2015-05-19 L. M. Bozzetto , M. D. Filipović , E. J. Crawford , I. S. Bojicić , A. Mendik , B. Wardlaw , J. L. Payne , A. Y. De Horta

We present the discovery of a new Odd Radio Circle (ORC J0219--0505) in 1.2~GHz radio continuum data from the MIGHTEE survey taken with the MeerKAT telescope. The radio-bright host is a massive elliptical galaxy, which shows extended…

We present results for an up-to-date uncatalogued star cluster projected towards the Eastern side of the Large Magellanic Cloud (LMC) outer disc. The new object was discovered from a search of loose star cluster in the Magellanic Clouds'…

星系天体物理 · 物理学 2016-04-20 Andrés E. Piatti

Odd Radio Circles (ORCs) are unexpected faint circles of diffuse radio emission discovered in recent wide deep radio surveys. They are typically about one arcmin in diameter, and may be spherical shells of synchrotron emission about a…

星系天体物理 · 物理学 2021-11-03 Ray P. Norris , Evan Crawford , Peter Macgregor

We report the discovery of a highly circularly polarized, variable, steep-spectrum pulsar in the Australian Square Kilometre Array Pathfinder (ASKAP) Variables and Slow Transients (VAST) survey. The pulsar is located about $1^\circ$ from…

Here we present a radio continuum study based on new and archival data from the Australia Telescope Compact Array towards N 103B, a young (<=1000 yrs) spectroscopically confirmed type Ia SNR in the Large Magellanic Cloud (LMC) and proposed…

The Large Magellanic Cloud (LMC) hosts a rich and varied population of supernova remnants (SNRs). Optical, X-ray, and radio observations are required to identify these SNRs, as well as to ascertain the various processes responsible for the…

ROSAT observations of the Large Magellanic Cloud (LMC) have revealed a large diffuse X-ray arc around the point source RX J053335-6854.9. The relative locations of the diffuse and point sources suggest that they might originate from a…

天体物理学 · 物理学 2009-11-10 J. D. Lowry , Y. -H. Chu , M. A. Guerrero , R. A. Gruendl , S. L. Snowden , R. C. Smith

Recent high-resolution X-ray spectroscopy has revealed that several supernova remnants (SNRs) in the Large Magellanic Cloud (LMC) show unusually high forbidden-to-resonance ($f/r$) line ratios. While their origin is still uncertain and…

高能天体物理现象 · 物理学 2022-06-15 Yosuke Koshiba , Hiroyuki Uchida , Takaaki Tanaka , Yuki Amano , Hidetoshi Sano , Takeshi Go Tsuru

In a search for low surface brightness radio nebulae using the ASKAP-EMU survey, we discovered a faint radio shell, G289.6+5.8, and its central point radio source at the position of the soft gamma-ray source IGR J11187-5438. The central…

The Origem Loop in the Galactic anticentre was discovered in 1970s and suggested to be a large supernova remnant. It was argued later to be a chance superposition of unrelated radio sources. We attempt to understand the properties of the…

星系天体物理 · 物理学 2015-06-12 X. Y. Gao , J. L. Han

The N206 supernova remnant (SNR) in the Large Magellanic Cloud (LMC) has long been considered a prototypical "mixed morphology" SNR. Recent observations, however, have added a new twist to this familiar plot: an elongated, radially-oriented…

天体物理学 · 物理学 2009-11-11 R. M. Williams , Y. -H. Chu , J. R. Dickel , R. A. Gruendl , F. D. Seward , M. A. Guerrero , G. Hobbs