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Large-scale radio continuum surveys have good potential for discovering new Galactic supernova remnants (SNRs). Surveys of the Galactic plane are often limited in the Galactic latitude of |b| ~ 5 degree. SNRs at high latitudes, such as the…

Astrophysics of Galaxies · Physics 2014-09-05 X. Y. Gao , J. L. Han

The supernova remnant (SNR) G288.8-6.3 was recently discovered as a faint radio shell at large Galactic latitude using observations with ASKAP in the EMU survey. Here, we make the first detailed investigation of the $\gamma$-ray emission…

We have observed the Galactic supernova remnant G16.7+0.1 for 13 ks using the EPIC cameras aboard the XMM-Newton X-ray Observatory, producing the first detection of the SNR outside of the radio band. G16.7+0.1 is one of the faintest radio…

Astrophysics · Physics 2007-05-23 Marcel A. Agueros , David J. Helfand , Eric V. Gotthelf

We have carried out high-resolution near-infrared spectroscopic observations toward 16 Galactic supernova remnants (SNRs) showing strong H$_{2}$ emission features. A dozen bright H$_{2}$ emission lines are clearly detected for individual…

Astrophysics of Galaxies · Physics 2020-11-25 Yong-Hyun Lee , Bon-Chul Koo , Jae-Joon Lee

Wide-field H-alpha images of the Galactic plane have revealed a new supernova remnant (SNR) nearly three degrees in diameter centred at l = 107.0, b = +9.0. Deep and higher resolution H-alpha and [O III] 5007 Ang images show dozens of…

We present a model for the radio evolution of supernova remnants (SNRs) obtained by using three-dimensional (3D) hydrodynamic simulations, coupled with nonlinear kinetic theory of cosmic ray (CR) acceleration in SNRs. We model the radio…

High Energy Astrophysical Phenomena · Physics 2018-01-12 Marko Z. Pavlović , Dejan Urošević , Bojan Arbutina , Salvatore Orlando , Nigel Maxted , Miroslav D. Filipović

Spatial template is important to study the nearby supernova remnant (SNR). For SNR G332.5-5.6, we report a gaussian disk with radius of about 1.06 degrees to be a potential good spatial model in the gamma-ray band. Employing this new…

High Energy Astrophysical Phenomena · Physics 2024-03-12 Ming-Hong Luo , Qing-Wen Tang , Xiu-Rong Mo

A new faint and large shell-type radio Supernova Remnant (SNR) G108.2-0.6 has been discovered in the Canadian Galactic Plane Survey (CGPS). The SNR shows an elliptical shell-type structure at 1420 MHz, and has a 408-1420 MHz TT-plot…

Astrophysics · Physics 2009-11-11 W. W. Tian , D. A. Leahy , T. J. Foster

We present a re-discovery of G278.94+1.35 as possibly one of the largest known Galactic supernova remnants (SNR) - that we name Diprotodon. While previously established as a Galactic SNR, Diprotodon is visible in our new EMU and GLEAM radio…

Distance measurements of supernova remnants (SNRs) are essential and important. Accurate estimates of physical size, dust masses, and some other properties of SNRs depend critically on accurate distance measurements. However, the…

Astrophysics of Galaxies · Physics 2020-07-15 Shu Wang , Chengyu Zhang , Biwei Jiang , He Zhao , Bingqiu Chen , Xiaodian Chen , Jian Gao , Jifeng Liu

We present a radio analysis of the recently identified supernova remnant G321.3-3.9 using archival multi-wavelength data spanning 88-2304 MHz. The source exhibits an elliptical shell-like morphology (1.3 deg x 1.7 deg) and a relatively flat…

Astrophysics of Galaxies · Physics 2026-02-02 Shaobo Zhang , Xianhuan Lei , Hui Zhu , Xueying Hu , Xiaohong Cui , Wenwu Tian , Haiyan Zhang , Dan Wu

In this paper we discuss the radio continuum and X-ray properties of the so-far poorly studied Galactic supernova remnant (SNR) G5.9+3.1. We present the radio spectral energy distribution (SED) of the Galactic SNR G5.9+3.1 obtained with the…

We present a catalogue of 18 new Galactic supernova remnants (SNRs) uncovered in the optical regime as filamentary emissions and extended nebulosities on images of the Anglo Australian Observatory/United Kingdom Schmidt Telescope (AAO/UKST)…

Astrophysics · Physics 2009-11-13 M. Stupar , Q. A. Parker , M. D. Filipovic

We survey four nearby irregular galaxies for radio supernova remnants (SNRs) using deep (1 sigma ~ 20 microJy), high resolution (~20 pc) VLA continuum data at 20, 6, and 3.6 cm. We identify discrete sources in these galaxies and use radio…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 Laura Chomiuk , Eric Wilcots

We present the first detailed study on the Galactic supernova remnant (SNR) G46.8-0.3 and its environment since its discovery more than 50 years ago. With new flux measurements from radio surveys plus a compilation from the literature we…

High Energy Astrophysical Phenomena · Physics 2022-08-17 L. Supan , G. Fischetto , G. Castelletti

Accurate distance measurements to supernova remnants (SNRs) are essential for determining their physical parameters, such as size, age, explosion energy, and for constraining the properties of associated neutron stars (NSs). We present an…

Astrophysics of Galaxies · Physics 2025-06-19 Xiaohan Chen , Shu Wang , Xiaodian Chen

Observations of Galactic supernova remnants (SNRs) are crucial to understanding supernova explosion mechanisms and their impact on our Galaxy's evolution. SNRs are usually identified by searching for extended, circular structures in all-sky…

Astrophysics of Galaxies · Physics 2025-03-05 S. Mantovanini , N. Hurley-Walker , G. E. Anderson

The Sino-German 6cm polarization survey has mapped in total intensity and polarization intensity over an area of approximately 2200 square degrees in the Galactic disk. This survey provides an opportunity to search for Galactic supernova…

Astrophysics of Galaxies · Physics 2015-06-15 X. Y. Gao , X. H. Sun , J. L. Han , W. Reich , P. Reich , R. Wielebinski

Recent hydrodynamical models of supernova remnants (SNRs) demonstrate that their evolution depends heavily on the inhomogeneities of the surrounding medium. As SNRs expand, their morphologies are influenced by the non-uniform and turbulent…

High Energy Astrophysical Phenomena · Physics 2019-11-06 Jennifer N. Stafford , Laura A. Lopez , Katie Auchettl , Tyler Holland-Ashford

We present the results of 12CO J = 1-0 line observations of eleven Galactic supernova remnants (SNRs) obtained using the Seoul Radio Astronomy Observatory (SRAO) 6-m radio telescope. The observation was made as a part of the SRAO CO survey…

Astrophysics of Galaxies · Physics 2015-06-05 Il-Gyo Jeong , Do-Young Byun , Bon-Chul Koo , Jea-Joon Lee , Jung-Won Lee , Hyunwoo Kang