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Related papers: Polarization observations of SNR G156.2+5.7 at lam…

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We present an XMM-Newton observation of the highly polarized low-surface brightness supernova remnant G107.5-1.5, discovered with the Canadian Galactic Plane Survey (CGPS). We do not detect diffuse X-ray emission from the SNR and set an…

High Energy Astrophysical Phenomena · Physics 2014-07-30 M. S. Jackson , S. Safi-Harb , R. Kothes

We describe the serendipitous discovery of a radio point source in a 618 MHz image of the supernova remnant(SNR) G76.9+1.0. The SNR has a bipolar structure and the point source is located near a faint bridge of emission joining the two…

High Energy Astrophysical Phenomena · Physics 2015-05-28 V. R. Marthi , J. N. Chengalur , Y. Gupta , G. C. Dewangan , D. Bhattacharya

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 the first dedicated X-ray study of the supernova remnant (SNR) G32.8-0.1 (Kes 78) with Suzaku. X-ray emission from the whole SNR shell has been detected for the first time. The X-ray morphology is well correlated with the…

High Energy Astrophysical Phenomena · Physics 2016-02-17 Aya Bamba , Yukikatsu Terada , John Hewitt , Robert Petre , Lorella Angelini , Samar Safi-Harb , Ping Zhou , Fabrizio Bocchino , Makoto Sawada

We present polarization and Faraday rotation for the supernova remnants (SNRs) G46.8-0.3, G43.3-0.2, G41.1-0.3, and G39.2-0.3 in L-band (1-2 GHz) radio continuum in The HI/OH/Recombination line (THOR) survey. We detect polarization from…

The supernova remnant (SNR) G150.3+4.5 was first identified in radio, exhibiting a hard GeV spectrum and a $\sim 1.5^\circ$ radius. Radio observations revealed a bright arc with an index of $\sim -0.40$, which stands in contrast to the…

High Energy Astrophysical Phenomena · Physics 2024-08-20 Yuan Li , Siming Liu , Gwenael Giacinti

A supernova remnant (SNR) candidate SRGe~J0023+3625 = G116.6-26.1 was recently discovered in the \textit{SRG}/eROSITA all-sky X-ray survey. This large ($\sim 4$ deg in diameter) SNR candidate lacks prominent counterparts in other bands.…

High Energy Astrophysical Phenomena · Physics 2022-04-20 E. M. Churazov , I. I. Khabibullin , A. M. Bykov , N. N. Chugai , R. A. Sunyaev , I. I. Zinchenko

A combination of archival multi-frequency radio observations with narrow-band HAlpha optical imagery and new confirmatory optical spectroscopy have shown that candidate supernova remnant G6.31+0.54 can now be confirmed as part of a Galactic…

Astrophysics of Galaxies · Physics 2018-07-11 M. Stupar , Q. A. Parker , D. J. Frew

We report the first detection of optical emission from the shell-type Galactic supernova remnant (SNR) G108.2$-$0.6. We obtained H$\alpha$ images and long-slit spectra using the 1.5-m RTT150 telescope to examine the morphological and…

High Energy Physics - Phenomenology · Physics 2023-12-21 Gunay Payli , Hicran Bakis , Ebru Aktekin , Hidetoshi Sano , Aytap Sezer

More than 90% of the known Milky Way supernova remnants are within 5 degrees of the Galactic Plane. We present the discovery of the supernova remnant G181.1+9.5, a new high-latitude SNR, serendipitously discovered in an ongoing survey of…

High Energy Astrophysical Phenomena · Physics 2017-01-18 R. Kothes , P. Reich , T. J. Foster , W. Reich

We report an X-ray study of the evolved Galactic supernova remnant (SNR) G156.2+5.7 based on six pointing observations with Suzaku. The remnant's large extent (100$\arcmin$ in diameter) allows us to investigate its radial structure in the…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Hiroyuki Uchida , Hiroshi Tsunemi , Satoru Katsuda , Koji Mori , Robert Petre , Hiroya Yamaguchi

We present the results obtained from imaging observations, and search for radio pulsations towards the magnetar SGR J1935+2154 made using the Giant Metrewave Radio Telescope, and the Ooty Radio Telescope. We present the high resolution…

Solar and Stellar Astrophysics · Physics 2016-08-02 Mayuresh Surnis , Bhal Chandra Joshi , Yogesh Maan , M. A. Krishnakumar , P. K. Manoharan , Arun Naidu

G326.3$-$1.8 (also known as MSH 15$-$56) has been detected in radio as a middle-aged composite supernova remnant (SNR) consisting of an SNR shell and a pulsar wind nebula (PWN), which has been crushed by the SNR's reverse shock. Previous…

High Energy Astrophysical Phenomena · Physics 2018-09-19 J. Devin , F. Acero , J. Ballet , J. Schmid

We have observed two fields - Field-I (l=3.2 degrees, b=-1.0 degree) and Field-II (l=356.8 degrees, b=-0.1 degree) with the Giant Metrewave Radio Telescope (GMRT) at 330 MHz. In the first field, we have studied the candidate supernova…

Astrophysics · Physics 2009-11-07 Subhashis Roy , A. Pramesh Rao

G21.5-0.9 is a plerionic supernova remnant (SNR) whose properties hint at the presence of a pulsar -- yet no pulsations have been found at any wavelength. Early observations with Chandra led to the discovery of an extended component, making…

Astrophysics · Physics 2007-05-23 S. Safi-Harb , I. M. Harrus , R. Petre , G. G. Pavlov , A. B. Koptsevitch , D. Sanwal

We present a deep Chandra observation of the shell supernova remnant G32.4+0.1, whose featureless X-ray spectrum has led to its classification as an X-ray synchrotron-dominated supernova remnant (SNR). We find a partial shell morphology…

High Energy Astrophysical Phenomena · Physics 2024-02-19 Stephen P. Reynolds , Kazimierz J. Borkowski

The candidate supernova remnant (SNR) G118.4+37.0 (Calvera's SNR), discovered as a faint radio ring at high Galactic latitude and coincident with extended Fermi/LAT gamma-ray emission, is likely associated to the X-ray pulsar 1RXS…

High Energy Astrophysical Phenomena · Physics 2025-09-03 Emanuele Greco , Michela Rigoselli , Sandro Mereghetti , Fabrizio Bocchino , Marco Miceli , Vincenzo Sapienza , Salvatore Orlando

We present observations between 1.4 and 18 GHz confirming that G64.5+0.9 is new Galactic shell supernova remnant, using the Very Large Array and the Arcminute Microkelvin Imager. The remnant is a shell ~8 arcmin in diameter with a spectral…

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…

A new investigation of the supernova remnant (SNR) N157B was carried out with the Australia Telescope Compact Array. Radio continuum images of the entire 30 Doradus region have been made at 3.5 and 6 cm wavelength with a resolution of 2".…

Astrophysics · Physics 2009-10-31 J. S. Lazendic , J. R. Dickel , R. F. Haynes , P. A. Jones , G. L. White