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Deep Halpha images of portions of a faint 3 x 4 degree Halpha shell centered at l = 159.6 deg, b = 7.3 deg seen on the Virginia Tech Spectral Line Survey images revealed the presence of several thin emission filaments along its eastern…

Astrophysics of Galaxies · Physics 2015-05-19 Robert Fesen , Dan Milisavljevic

We present compelling evidence for confirmation of a Galactic supernova remnant (SNR) candidate, G332.5-5.6, based initially on identification of new, filamentary, optical emission line nebulosity seen in the arcsecond resolution images…

Astrophysics · Physics 2009-11-13 M. Stupar , Q. A. Parker , M. D. Filipovic , D. J. Frew , I. Bojicic , B. Aschenbach

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…

Deep H$\alpha$ images of a faint emission complex 4.0 x 5.5 degrees in angular extent and located far off the Galactic plane at l = 70.0 degrees, b=-21.5 degrees reveal numerous thin filaments suggestive of a supernova remnant's shock…

High Energy Astrophysical Phenomena · Physics 2015-10-14 Robert Fesen , Jack Neustadt , Christine Black , Ari Koeppel

The supernova remnant (SNR) G288.8-6.3 was recently discovered as a faint radio shell at large Galactic latitude using observations with ASKAP in the EMU survey. Here, we make the first detailed investigation of the $\gamma$-ray emission…

As part of a systematic search programme of a 10-degree wide strip of the Northern Galactic plane we present preliminary evidence for the discovery of four (and possibly five) new supernova remnants (SNRs). The pilot search area covered the…

Solar and Stellar Astrophysics · Physics 2015-06-12 L. Sabin , Q. A. Parker , M. E. Contreras , L. Olguín , D. J. Frew , M. Stupar , R. Vázquez , N. J. Wright , R. L. M Corradi , R. A. H Morris

The supernova remnant (SNR) candidate G 116.6-26.1 is one of the few high Galactic latitude ($|b| > 15^o$) remnants detected so far in several wavebands. It was discovered recently in the SRG/eROSITA all-sky X-ray survey and displays also a…

High Energy Astrophysical Phenomena · Physics 2022-06-22 E. V. Palaiologou , I. Leonidaki , M. Kopsacheili

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 discovered a middle-aged supernova remnant (SNR) in the vicinity of G69.7+1.0 using the ASCA satellite. G69.7+1.0 was identified in the 2.7 GHz survey and classified as a shell-type SNR with a diameter of 16 arcmin. During the ROSAT…

Astrophysics · Physics 2015-06-24 Kumi Yoshita , Emi Miyata , Hiroshi Tsunemi

We have carried out high-resolution near-infrared spectroscopic observations toward 16 Galactic supernova remnants (SNRs) showing strong H$_{2}$ emission features. A dozen bright H$_{2}$ emission lines are clearly detected for individual…

Astrophysics of Galaxies · Physics 2020-11-25 Yong-Hyun Lee , Bon-Chul Koo , Jae-Joon Lee

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

We present a catalogue of 18 new Galactic supernova remnants (SNRs) uncovered in the optical regime as filamentary emissions and extended nebulosities on images of the Anglo Australian Observatory/United Kingdom Schmidt Telescope (AAO/UKST)…

Astrophysics · Physics 2009-11-13 M. Stupar , Q. A. Parker , M. D. Filipovic

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 have imaged a 1 deg^2 field centered on the known Galactic supernova remnant (SNR) G11.2-0.3 at 74, 330, and 1465 MHz with the Very Large Array radio telescope (VLA) and 235 MHz with the Giant Metrewave Radio Telescope (GMRT). The 235,…

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

We present the first optical study of the supernova remnant (SNR) G7.7-3.7, with the aim of determining its evolutionary phase since it has been suggested to be the remnant of SN 386 AD. We obtained narrow-band images in the filters…

Astrophysics of Galaxies · Physics 2023-09-06 V. Domček , J. V. Hernández Santisteban , A. Chiotellis , P. Boumis , J. Vink , S. Akras , D. Souropanis , P. Zhou , A. de Burgos

Deep optical emission-line images are presented for nine known plus three new Galactic supernova remnants (SNRs), all but one having at least one angular dimension greater than one degree. Wide-field images taken in H$\alpha$ and [O III]…

New narrow-band HAlpha imaging and subsequent optical spectra confirm G315.1+2.7, a previously identified candidate supernova remnant (SNR), as a bona-fide Galactic SNR. Present observations are based on independent discovery of filamentary…

Astrophysics · Physics 2008-11-26 M. Stupar , Q. A. Parker , M. D. Filipovic

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
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