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We report on the first polarimetric observations at 19 GHz made with the upgraded Australia Telescope Compact Array. Observations were made of the Galactic supernova remnant (SNR) G328.8+0.2. We find the SNR has circular morphology with a…

Astrophysics · Physics 2009-11-10 S. Johnston , N. M. McClure-Griffiths , B. Koribalski

We present the preliminary results of a 40.8 ks Chandra ACIS observation of the young supernova remnant (SNR) N103B located in the Large Magellanic Cloud. The image reveals structure at the sub-arcsecond level, including several bright…

Astrophysics · Physics 2019-08-17 K. T. Lewis , D. N. Burrows , J. A. Nousek , G. P. Garmire , P. Slane , J. P. Hughes

We present 15-GHz follow-up radio observations of eleven Swift gamma-ray burst (GRB) sources, obtained with the Arcminute Microkelvin Imager Large Array (AMI-LA). The initial follow-up observation for each source was made in a fully…

We report on sensitive new 1.4-GHz VLA radio observations of the pulsar wind nebula G21.5-0.9, powered by PSR J1833-1034, and its environs. Our observations were targeted at searching for the radio counterpart of the shell-like structure…

Astrophysics of Galaxies · Physics 2015-05-19 Michael F. Bietenholz , Heather Matheson , Samar Safi-Harb , Crystal Brogan , Norbert Bartel

Non-thermal radio emission is detected in the region of the gamma-ray source FHES J1723.5-0501. The emission has an approximately circular shape 0.8 degrees in diameter. The observations confirm its nature as a new supernova remnant,…

High Energy Astrophysical Phenomena · Physics 2021-12-15 Miguel Araya , Natasha Hurley-Walker , Sebastián Quirós-Araya

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…

Cosmology and Nongalactic Astrophysics · Physics 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 near- to mid-infared study of supernova remnants (SNRs) using the AKARI IRC Survey of the Large Magellanic Cloud (LMC). The LMC survey observed about a 10 square degree area of the LMC in five bands centered at 3, 7, 11, 15,…

Supernova remnants (SNRs) are observable for about 6-15x10^4 years before they fade into the Galactic interstellar medium. With a Galactic supernova rate of approximately two per century, we can expect to have of the order of 1200 SNRs in…

High Energy Astrophysical Phenomena · Physics 2021-04-07 W. Becker , N. Hurley-Walker , Ch. Weinberger , L. Nicastro , M. G. F. Mayer , A. Merloni , J. Sanders

We present high-resolution X-ray observations of the small-diameter supernova remnant (SNR) G349.7+0.2 with the Chandra X-ray Observatory. The overall SNR spectrum can be described by two spectral components. The soft component is in…

Astrophysics · Physics 2009-11-10 J. S. Lazendic , P. O. Slane , J. P. Hughes , Y. Chen , T. M. Dame

We present 25 arcsecond resolution radio images of five Lynds Dark Nebulae (L675, L944, L1103, L1111 & L1246) at 16 GHz made with the Arcminute Microkelvin Imager (AMI) Large Array. These objects were previously observed with the AMI Small…

We present a detailed radio-continuum study on Australia Telescope Compact Array (ATCA) observations of Large Magellanic Cloud (LMC) supernova remnant (SNR), MCSNR J0536-7038. This Type Ia SNR follows a horseshoe morphology, with a size 32…

High Energy Astrophysical Phenomena · Physics 2015-06-18 L. M. Bozzetto , M. D. Filipovic

We have detected a spatially resolved supernova remnant (SNR) in the center of the Andromeda Galaxy, in radio, X-ray, and optical wavelengths. These observations provide the highest spatial resolution imaging of a radio/X-ray/optical SNR in…

Astrophysics · Physics 2009-11-07 A. K. H. Kong , L. O. Sjouwerman , B. F. Williams , M. R. Garcia , J. R. Dickel

We present preliminary results of a detailed 3D study of supernova remnants in the nearby spiral M51 using data from the SIGNALS survey obtained with the imaging Fourier transform spectrometer SITELLE at the Canada-France-Hawaii telescope…

Astrophysics of Galaxies · Physics 2025-02-26 Billy Gamache , Laurent Drissen , Carmelle Robert , Mykola Posternak

We present spectropolarimetric radio images of the supernova remnant (SNR) G296.5+10.0 at frequencies near 1.4 GHz, observed with the Australia Telescope Compact Array. By applying rotation measure (RM) synthesis to the data, a…

Astrophysics of Galaxies · Physics 2015-05-18 L. Harvey-Smith , B. M. Gaensler , R. Kothes , R. Townsend , G. H. Heald , C. -Y. Ng , A. J. Green

We report on Australia Telescope Compact Array (ATCA) HI observations carried out in the direction of bilateral supernova remnants (SNRs) with associated neutron stars: G296.5+10.0 and G320.4--1.2, in a search for the origin of such…

Astrophysics · Physics 2007-05-23 G. Dubner , E. Giacani , B. M. Gaensler , W. M. Goss , A. J. Green

We report the detection of gamma-ray emission coincident with four supernova remnants (SNRs) using data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. G349.7+0.2, CTB 37A, 3C 391 and G8.7-0.1 are supernova…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Daniel Castro , Patrick Slane

High resolution and sensitivity large-scale radio surveys of the Milky Way are critical in the discovery of very low surface brightness supernova remnants (SNRs), which may constitute a significant portion of the Galactic SNRs still…

Astrophysics of Galaxies · Physics 2014-07-02 Stephanie Gerbrandt , Tyler J. Foster , Roland Kothes , Joern Geisbuesch , Albert Tung

In this paper we present new optical observations of the galaxy NGC 185 intended to reveal the status of supernova remnants (SNRs) in this dwarf companion of the Andromeda galaxy. Previously, it was reported that this galaxy hosts one SNR.…

Astrophysics of Galaxies · Physics 2019-08-14 M. M. Vučetić , D. Ilić , O. V. Egorov , A. Moiseev , D. Onić , T. G. Pannuti , B. Arbutina , N. Petrov , D. Urošević

Using the Australia Telescope Compact Array, we have carried out a survey of the HI emission in the direction of the ``barrel-shaped'' supernova remnant (SNR) G320.4-1.2 (MSH 15-52) and its associated young pulsar B1509-58. The angular…

Astrophysics · Physics 2009-11-07 G. M. Dubner , B. M. Gaensler , E. B. Giacani , W. M. Goss , A. J. Green