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Related papers: Is the Cygnus Loop two supernova remnants?

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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…

Young Supernova remnants (SNRs) with smaller angular sizes are likely missing from existing radio SNR catalogues, caused by observational constraints and selection effects. In order to find new compact radio SNR candidates, we searched the…

Astrophysics of Galaxies · Physics 2021-09-16 S. Ranasinghe , D. Leahy , J Stil

We present an analysis of the gamma-ray measurements by the Large Area Telescope(LAT) onboard the \textit{Fermi Gamma-ray Space Telescope} in the region of the supernova remnant(SNR) Cygnus Loop(G74.0$-$8.5). We detect significant gamma-ray…

High Energy Astrophysical Phenomena · Physics 2015-05-30 H. Katagiri , L. Tibaldo , J. Ballet , F. Giordano , I. A. Grenier , T. A. Porter , M. Roth , O. Tibolla , Y. Uchiyama , R. Yamazaki

Recent studies using 21 cm HI line and $^{13}$CO line observations in the inner part of the Galaxy have resulted in new distances for 30 Galactic supernova remnants (SNRs). 15 of those remnants have observed X-ray spectra, for which…

Astrophysics of Galaxies · Physics 2018-10-17 D. A. Leahy , S. Ranasinghe

Supernova remnants (SNRs) in the Galaxy are an important source of energy injection into the interstellar medium, and also of cosmic rays. Currently there are 294 known SNRs in the Galaxy, and their distribution with Galactocentric radius…

High Energy Astrophysical Phenomena · Physics 2015-10-14 D. A. Green

We present a table of 215 SNRs with distances. New distances are found to SNR G$51.26+0.11$ of $6.6 \pm 1.7$ kpc using HI absorption spectra, and to 5 other SNRs using maser/molecular cloud associations. We recalculate the distances and…

High Energy Astrophysical Phenomena · Physics 2022-11-30 S. Ranasinghe , D. Leahy

There are either a near kinematic distance of 5.5 kpc or a far distance of 8.8 kpc for a Galactic supernova remnant (SNR) G32.8$-$0.1 derived by using the rotation curve of the Galaxy. Here we make sure that the remnant distance is the…

High Energy Astrophysical Phenomena · Physics 2009-09-03 Jian-Wen Xu , Hui-Rong Zhang

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…

We observed the center portion of the Cygnus Loop supernova remnant with the ASCA observatory. The X-ray spectrum of the center portion was significantly different from that obtained at the North-East (NE) limb. The emission lines from Si…

Astrophysics · Physics 2015-06-24 Emi Miyata , H. Tsunemi , T. Kohmura , S. Suzuki , S. Kumagai

Galactic supernova remnants (SNRs) with angular dimensions greater than a few degrees are relatively rare, as are remnants located more than ten degrees off the Galactic plane. Here we report a UV and optical investigation of two previously…

We present an revised table of 390 Galactic radio supernova remnants (SNRs) and their basic parameters. Statistical analyses are performed on SNR diameters, ages, spectral indices, Galactic heights and spherical symmetries. Furthermore, the…

Astrophysics of Galaxies · Physics 2023-04-12 S. Ranasinghe , D. Leahy

Supernova remnants (SNRs) arise from the interaction between the ejecta of a supernova (SN) explosion and the surrounding circumstellar and interstellar medium. Some SNRs, mostly nearby SNRs, can be studied in great detail. However, to…

High Energy Astrophysical Phenomena · Physics 2018-04-25 Knox S. Long

Supernovae release an enormous amount of energy into the interstellar medium. Their remnants can observationally be traced up to several ten-thousand years. So far more than 230 Galactic supernova remnants (SNRs) have been identified in the…

Astrophysics · Physics 2007-05-23 W. Reich

We report on the continuum and polarization observations of the Cygnus Loop supernova remnant (SNR) conducted by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). FAST observations provide high angular resolution and high…

Astrophysics of Galaxies · Physics 2021-08-24 Xiaohui Sun , Meiniang Meng , Xuyang Gao , Wolfgang Reich , Peng Jiang , Di Li , Huirong Yan , Xianghua Li

We report on a discovery of a diffuse nebula containing a pointlike source in the southern blowout region of the Cygnus Loop supernova remnant, based on Suzaku and XMM-Newton observations. The X-ray spectra from the nebula and the pointlike…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Satoru Katsuda , Hiroshi Tsunemi , Koji Mori , Hiroyuki Uchida , Robert Petre , Shin'ya Yamada , Toru Tamagawa

We report on the discovery of two supernova remnants (SNRs) designated G152.4-2.1 and G190.9-2.2, using Canadian Galactic Plane Survey data. The aims of this paper are, first, to present evidence that favours the classification of both…

Astrophysics of Galaxies · Physics 2013-01-15 Tyler Foster , Brendan Cooper , Wolfgang Reich , Roland Kothes , Jennifer West

We report the discovery of a ring of low surface brightness radio emission around the Calvera pulsar, a high Galactic latitude, isolated neutron star, in the LOFAR Two-metre Sky Survey (LoTSS). It is centered at…

We determined shock speed in the Galactic supernova remnant Cygnus Loop, using proper motion of its optical filaments and the latest estimate for its distance. The proper motion was measured by comparing H$\alpha$ images of the remnant…

High Energy Astrophysical Phenomena · Physics 2024-03-11 M. Vucetic , N. Milanovic , D. Urosevis , J. Raymond , D. Onic , S. Milosevic , N. Petrov

We report the detection of Galactic supernova remnants (SNRs) in the mid-infrared (at 24 and 70 {\mu}m), in the coordinate ranges 10 < l < 65 deg and 285 < l < 350 deg, |b| < 1 deg, using the Multiband Imaging Photometer (MIPS) aboard the…

Astrophysics of Galaxies · Physics 2015-05-27 D. Pinheiro Goncalves , A. Noriega-Crespo , R. Paladini , P. G. Martin , S. J. Carey