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We investigate the dust associated with the supernova remnant (SNR) N49 in the Large Magellanic Cloud (LMC) as observed with the Herschel Space Observatory. N49 is unusually bright because of an interaction with a molecular cloud along its…

Mixed-morphology supernova remnants (MMSNRs) are characterized by a shell-like morphology in the radio and centrally-peaked thermal emission in the X-ray band. The nature of this peculiar class of supernova remnants (SNRs) remains a…

High Energy Astrophysical Phenomena · Physics 2024-04-01 Alexandros Chiotellis , Emmanouil Zapartas , Dominique M. -A. Meyer

We carried out new CO($J$ = 2-1) observations toward the mixed-morphology supernova remnant (SNR) W49B with the Atacama Large Millimeter/submillimeter Array (ALMA). We found that CO clouds at $\sim$10 km s$^{-1}$ show a good spatial…

High Energy Astrophysical Phenomena · Physics 2021-10-05 H. Sano , S. Yoshiike , Y. Yamane , K. Hayashi , R. Enokiya , K. Tokuda , K. Tachihara , G. Rowell , M. D. Filipović , Y. Fukui

We report the ATCA and ROSAT detection of Supernova Remnant (SNR) J0529--6653 in the Large Magellanic Cloud (LMC) which is positioned in the projected vicinity of the known radio pulsar PSR B0529-66. In the radio-continuum frequencies, this…

We present a comprehensive X-ray study of the population of supernova remnants (SNRs) in the LMC. Using primarily XMM-Newton, we conduct a systematic spectral analysis of LMC SNRs to gain new insights on their evolution and the interplay…

We present a detailed study of molecular gas toward the supernovae remnant G347.3-0.5 (J1713.7-3946) obtained with the 4m mm/sub-mm telescope NANTEN . This study has revealed that several intensity peaks and the overall distribution of the…

Astrophysics · Physics 2009-11-13 Y. Moriguchi , K. Tamura , Y. Tawara , H. Sasago , K. Yamaoka , T. Onishi , Y. Fukui

We have investigated three SNRs in the LMC using multi-wavelength data. These SNRs are generally fainter than the known sample and may represent a previously missed population. One of our SNRs is the second LMC remnant analyzed which is…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-01 Matthew D. Klimek , S. D. Points , R. C. Smith , R. L. Shelton , R. Williams

Hadronic $\gamma$-ray sources associated with supernova remnants (SNRs) can serve as stopwatches for the escape of cosmic rays from SNRs, which gradually develops from highest-energy particles to lowest-energy particles with time. In this…

High Energy Astrophysical Phenomena · Physics 2023-03-15 Paul K. H. Yeung , Aya Bamba , Hidetoshi Sano

We present a spatially resolved study of the kinematical properties of known supernova remnants (SNRs) in the nearest galaxies of the SIGNALS survey, namely NGC 6822 (one object) and M33 (163 objects), based on data obtained with the…

Massive stars (mass beyond 8 solMass) release vast amounts of energy into the interstellar medium through their stellar winds, photoionising radiation and supernova explosions. These processes may compress nearby regions, triggering further…

In order to determine the Galactic distribution of supernova remnants (SNRs) there are two main difficulties: (i) there are selection effects which mean that catalogues of SNRs are not complete, and (ii) distances are not available for most…

Astrophysics of Galaxies · Physics 2015-06-11 D. A. Green

We present the first compelling evidence of shock-heated molecular clouds associated with the supernova remnant (SNR) N49 in the Large Magellanic Cloud (LMC). Using $^{12}$CO($J$ = 2-1, 3-2) and $^{13}$CO($J$ = 2-1) line emission data taken…

Recent gamma-ray observations show that middle aged supernova remnants (SNRs) interacting with molecular clouds (MCs) can be sources of both GeV and TeV emission. Based on the MC association, two scenarios have been proposed to explain the…

High Energy Astrophysical Phenomena · Physics 2016-09-13 Xiaping Tang , Roger A. Chevalier

We model SNRs at a variety of heights above the disk. Our detailed numerical simulations include non-equilibrium ionization and recombination and follow the remnants' evolution until their hot bubbles have cooled. We analytically calculate…

Astrophysics · Physics 2009-11-13 R. L. Shelton

A catalogue of 231 Galactic supernova remnants (SNRs) is presented, and the selection effects applicable to the identification of remnants at radio wavelengths are discussed. In addition to missing low surface brightness remnants, small…

Astrophysics · Physics 2007-05-23 D. A. Green

A morphological} search for molecular shells and cavities was performed around 63 Galactic supernova remnants (SNR) at $10^\circ \le l \le 50^\circ$, $|b|\le 1^\circ $using the FUGIN (FOREST Unbiased Galactic Imaging survey with the…

Astrophysics of Galaxies · Physics 2021-03-17 Yoshiaki Sofue , Mikito Kohno , Tomofumi Umemoto

The study of supernova remnants (SNRs) is fundamental to understanding the chemical enrichment and magnetism in galaxies, including our own Milky Way. In an effort to understand the connection between the morphology of SNRs and the Galactic…

Astrophysics of Galaxies · Physics 2016-03-09 J. L. West , S. Safi-Harb , T. Jaffe , R. Kothes , T. L. Landecker , T. Foster

We present a three dimensional (3D) extinction analysis in the region toward the supernova remnant (SNR) S147 (G180.0-1.7) using multi-band photometric data from the Xuyi Schmidt Telescope Photometric Survey of the Galactic Anticentre…

Astrophysics of Galaxies · Physics 2017-10-11 B. -Q. Chen , X. -W. Liu , J. -J. Ren , H. -B. Yuan , Y. Huang , B. Yu , M. -S. Xiang , C. Wang , Z. -J. Tian , H. -W. Zhang

We present a comparison of molecular clouds (MCs) from a simulation of supernova-driven interstellar medium (ISM) turbulence with real MCs from the Outer Galaxy Survey. The radiative transfer calculations to compute synthetic CO spectra are…

Astrophysics of Galaxies · Physics 2016-08-03 Paolo Padoan , Mika Juvela , Liubin Pan , Troels Haugbølle , Åke Nordlund

A large number of supernova remnants (SNRs) in our Galaxy and galaxies nearby have been resolved in various radio bands. This radio emission is thought to be produced via synchrotron emission from electrons accelerated by the shock that the…

High Energy Astrophysical Phenomena · Physics 2016-07-27 Rodolfo Barniol Duran , Joseph F. Whitehead , Dimitrios Giannios
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