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Related papers: The Intriguing Plerionic Supernova Remnant: G21.5-…

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We have performed a multi-wavelength study of supernova remnant (SNR) G57.2+0.8 and its environment. The SNR hosts the magnetar SGR 1935+2154, which emitted an extremely bright ms-duration radio burst on 2020 Apr 28 (The Chime/Frb…

High Energy Astrophysical Phenomena · Physics 2020-12-23 Ping Zhou , Xin Zhou , Yang Chen , Jie-Shuang Wang , Jacco Vink , Yuan Wang

G310.7-5.4 is a supernova remnant (SNR) candidate identified as a faint shell in the second epoch Molonglo Galactic Plane Survey (MGPS-2), but this has not been followed up with multi-wavelength observations until now. It is an example of…

The radio evolution of, so far the youngest known, Galactic supernova remnant (SNR) G1.9+0.3 is investigated by using three-dimensional (3D) hydrodynamic modelling and non-linear kinetic theory of cosmic ray (CR) acceleration in SNRs. We…

High Energy Astrophysical Phenomena · Physics 2017-04-05 M. Z. Pavlović

We present an X-ray analysis on the Galactic supernova remnant (SNR) G298.6-0.0 with Suzaku. The X-ray image shows a center-filled structure inside the radio shell, implying this SNR is categorized as a mixed-morphology (MM) SNR. The…

High Energy Astrophysical Phenomena · Physics 2015-10-21 Aya Bamba , Makoto Sawada , Yuto Nakano , Yukikatsu Terada , John Hewitt , Robert Petre , Lorella Angelini

Radio, X-ray, and HESS gamma-ray observations of the Galactic Center (GC) composite supernova remnant SNR G0.9+0.1 are used to constrain a time-dependent injection model of the downstream electron spectrum responsible for the total…

Astrophysics · Physics 2007-05-23 C. Venter , O. C. de Jager

We report on the Suzaku results of the mixed-morphology supernova remnant (SNR) G290.1$-$0.8 (MSH 11-61A). The SNR has an asymmetric structure extended to the southeast and the northwest. In the X-ray spectra of the center and the northwest…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Fumiyoshi Kamitsukasa , Katsuji Koyama , Hiroyuki Uchida , Hiroshi Nakajima , Kiyoshi Hayashida , Koji Mori , Satoru Katsuda , Hiroshi Tsunemi

G272.2-3.2 is a supernova remnant (SNR) characterized by an apparent centrally brightened X-ray morphology and thermally dominated X-ray emission. Because of this combination of Sedov-type (thermal emission) and non-Sedov type (non-shell…

Astrophysics · Physics 2009-11-06 I. M. Harrus , P. O. Slane , R. Smith , J. P. Hughes

We report measurements of X-ray expansion of the youngest Galactic supernova remnant, G1.9+0.3, using Chandra observations in 2007, 2009, and 2011. The measured rates strongly deviate from uniform expansion, decreasing radially by about 60%…

High Energy Astrophysical Phenomena · Physics 2015-06-19 K. J. Borkowski , S. P. Reynolds , D. A. Green , U. Hwang , R. Petre , K. Krishnamurthy , R. Willett

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…

We present results from the observation of the young Galactic supernova remnant (SNR) G292.0+1.8 with the Advanced CCD Imaging Spectrometer (ACIS) on board the {\it Chandra X-ray Observatory}. In the 0.3 $-$ 8 keV band, the high resolution…

(shortened) PSR J1119-6127 is a high magnetic field (B=4.1E13 Gauss), young (<=1,700 year-old), and slow (P=408 ms) radio pulsar associated with the supernova remnant (SNR) G292.2-0.5. In 2003, Chandra allowed the detection of the X-ray…

Astrophysics · Physics 2009-11-13 Samar Safi-Harb , Harsha S. Kumar

G35.6-0.4 is an extended radio source in the Galactic plane which has previously been identified as either a supernova remnant or an HII region. Observations from the VLA Galactic Plane Survey at 1.4 GHz with a resolution of 1 arcmin allow…

High Energy Astrophysical Phenomena · Physics 2015-05-13 D. A. Green

The supernova remnant N 157B contains a pulsar and three distinct synchrotron components with rather unusual properties. 1) A somewhat irregular elliptical pulsar wind nebula (PWN) visible in both X-ray and radio wavelengths. The nebula is…

Astrophysics · Physics 2007-05-23 ohn R. Dickel , Shiya Wang

MSH 15-56 (G326.3-1.8) is a composite supernova remnant (SNR) that consists of an SNR shell and a displaced pulsar wind nebula (PWN) in the radio. We present XMM-Newton and Chandra X-ray observations of the remnant that reveal a compact…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Tea Temim , Patrick Slane , Daniel Castro , Paul Plucinsky , Joseph Gelfand , John R. Dickel

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…

Wide-field Halpha images of the radio faint Galactic supernova remnant G182.4+4.2 reveal a surprisingly extensive and complex emission structure, with an unusual series of broad and diffuse filaments along the remnant's southwestern limb.…

High Energy Astrophysical Phenomena · Physics 2019-05-29 Robert Fesen , Jack Neustadt , Thomas How , Christine Black

We report results from 13 years of Chandra monitoring of nonthermal X-ray emission from the youngest Galactic supernova remnant G1.9+0.3, the only remnant known to be increasing in brightness. We confirm the spatially-integrated flux…

High Energy Astrophysical Phenomena · Physics 2024-12-17 Kazimierz J. Borkowski , Stephen P. Reynolds , Robert Petre , David A. Green

We report XMM-Newton observations of the Galactic supernova remnant G296.8-0.3, together with complementary radio and infrared data. The spatial and spectral properties of the X-ray emission, detected towards G296.8-0.3, was investigated in…

High Energy Astrophysical Phenomena · Physics 2015-05-30 E. Sánchez-Ayaso , J. A. Combi , J. F. Albacete Colombo , J. López-Santiago , J. Martí , A. J. Muñoz-Arjonilla

A recent measurement of the proper motion of PSR J0908-4913 shows that it is a fast moving object at a distance of some 3 kpc. Here we present evidence that the pulsar is located at the edge of a previously unknown, filled-centre supernova…

High Energy Astrophysical Phenomena · Physics 2021-09-01 Simon Johnston , Marcus Lower

We report the detection using ASCA data of a hard X-ray source in the vicinity of the radio pulsar PSR B1853+01 which is located within the supernova remnant (SNR) W44. PSR B1853+01, a 267ms pulsar, has to date only been detected in the…

Astrophysics · Physics 2009-10-28 Ilana M. Harrus , John P. Hughes , David J. Helfand
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