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Related papers: The Youngest Galactic Supernova Remnant: G1.9+0.3

200 papers

Supernova remnant (SNR) detection along the Galactic plane poses a number of challenges. The SNR G309.8+00.0 lies exactly on the Galactic plane, with its center coinciding with galactic latitude (b)=0 deg. In this paper we report the first…

High Energy Astrophysical Phenomena · Physics 2024-10-01 Miltiadis Michailidis , Gerd Pühlhofer , Andrea Santangelo , Manami Sasaki , Werner Becker

The youngest Galactic supernova remnant G1.9+0.3 shows a discrete feature between its radio and X-ray morphologies. The observed radio morphology features a single maximum in the north, while the X-ray observation shows two opposite 'ears'…

High Energy Astrophysical Phenomena · Physics 2023-01-20 Shaobo Zhang , Wenwu Tian , Mengfei Zhang , Hui Zhu , Xiaohong Cui

We present very long baseline interferometry (VLBI) observations of the milliarcsecond-scale radio structure of the supernova remnant SNR 4449$-$1 in the galaxy NGC 4449. This young and superluminous remnant was observed at 1.6 GHz…

High Energy Astrophysical Phenomena · Physics 2013-10-09 M. Mezcua , A. P. Lobanov , I. Martí-Vidal

We present an XMM-Newton observation of the long-overlooked radio source G350.1-0.3. The X-ray spectrum of G350.1-0.3 can be fit by a shocked plasma with two components: a high-temperature (1.5 keV) region with a low ionization time scale…

We present on results of a spatially resolved spectral analysis of G1.9+0.3, the youngest known supernova remnant in the Galaxy. The X-ray spectra are well described by synchrotron emission from a power-law electron distribution with an…

High Energy Astrophysical Phenomena · Physics 2025-10-01 Moeri Tao , Takaaki Tanaka , Hidetoshi Sano , Rami Z. E. Alsaberi , Jun Kataoka

We present new radio observations of the recently identified, young Galactic supernova remnant (SNR) RX J0852.0-4622 (G266.2-01.2) made at 1.40 GHz with a resolution of 14.9 arcmin. These results, along with other radio observations from…

Astrophysics · Physics 2007-05-23 A. R. Duncan , D. A. Green

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 report on new 5-GHz VLA radio observations of the pulsar-powered supernova remnant G21.5-0.9. These observations have allowed us to make a high-quality radio image of this remnant with a resolution of ~0.7". It has a filamentary…

Astrophysics · Physics 2009-11-13 M. F. Bietenholz , N. Bartel

We present the first X-ray detection of SNR 0450-70.9 the largest known supernova remnant (SNR) in the Large Magellanic Cloud. To study the physical conditions of this SNR, we have obtained XMM-Newton X-ray observations, optical images and…

Astrophysics · Physics 2009-11-10 R. M. Williams , Y. -H. Chu , J. R. Dickel , R. A. Gruendl , R. Shelton , S. D. Points , R. C. Smith

Sub-arcsecond radio continuum observations of the Galactic center region at $\lambda$6 and 2cm reveal a 0.5$^{\prime\prime}$ diameter source with a shell-like morphology. This source is linearly polarized at a level of 16% at $\lambda$6cm…

Astrophysics · Physics 2009-10-30 F. Yusef-Zadeh , W. D. Cotton , S. P. Reynolds

The properties of the Galactic HI shell GSH 138-01-94 are derived from data of the Canadian Galactic Plane Survey. The basic parameters of GSH 138-01-94 were determined by fitting the expansion of a thin shell to the expansion velocity…

Astrophysics · Physics 2009-11-07 J. M. Stil , Judith A. Irwin

We present the first detailed imaging and spatially resolved spectroscopic study of the Galactic supernova remnant G292.2-0.5, associated with the high-magnetic field radio pulsar J1119-6127, using Chandra and XMM-Newton. The…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Harsha S. Kumar , Samar Safi-Harb , Marjorie Gonzalez

We examine the new Galactic supernova remnant (SNR) candidate, G23.11+0.18, as seen by the Murchison Widefield Array (MWA) radio telescope. We describe the morphology of the candidate and find a spectral index of -0.63+/-0.05 in the…

Narrow passband optical images of the large Galactic supernova remnant G179.0+2.6 reveal a faint but nearly complete emission shell dominated by strong [O III] 4959,5007 A line emission. The remnant's optical emission, which consists of…

High Energy Astrophysical Phenomena · Physics 2018-05-02 Thomas How , Robert Fesen , Jack Neustadt , Christine Black , Nicolas Outters

We present a new Chandra observation of supernova remnant (SNR) G350.1-0.3. The high resolution X-ray data reveal previously unresolved filamentary structures and allow us to perform detailed spectroscopy in the diffuse regions of this SNR.…

Aims: We present a detailed study of the supernova remnant (SNR) G296.7-0.9 in the 0.2-12 keV X-ray band. Methods: Using data from XMM-Newton we performed a spectro-imaging analysis of G296.7-0.9 in order to deduce the basic parameters of…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Tobias Prinz , Werner Becker

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

Supernova remnant (SNR) RX J1713.7-3946 is well known for its bright TeV gamma-ray emission with shell-like morphology. To constrain the hydrodynamical evolution, we have performed six times observations of the northwestern (NW) shell with…

High Energy Astrophysical Phenomena · Physics 2016-11-15 Naomi Tsuji , Yasunobu Uchiyama

Aims: We present a detailed X-ray study of the recently discovered supernova remnant (SNR) G53.41+0.03 that follows up and further expands on the previous, limited analysis of archival data covering a small portion of the SNR. Methods: With…

High Energy Astrophysical Phenomena · Physics 2022-03-14 V. Domček , J. Vink , P. Zhou , L. Sun , L. Driessen

Sensitive radio continuum surveys of the Galactic plane are ideal for discovering new supernova remnants (SNRs). From the Sino-German {\lambda}6 cm polarisation survey of the Galactic plane, an extended shell-like structure has been found…

Astrophysics of Galaxies · Physics 2020-03-11 X. Y. Gao , P. Reich , W. Reich , L. G. Hou , J. L. Han