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Related papers: The Cygnus Loop's Distance, Properties, and Enviro…

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We present a revised distance to the Cygnus Loop supernova remnant of $725\pm15$ pc based on Gaia Early Data Release 3 parallax measurements (EDR3) for several stars previously found to be located either inside or behind the supernova based…

High Energy Astrophysical Phenomena · Physics 2021-09-14 Robert A. Fesen , Kathryn E. Weil , Ignacio Cisneros , William P. Blair , John C. Raymond

Underlying nearly every quantitative discussion of the Cygnus Loop supernova remnant is uncertainty about its distance. Here we present optical images and spectra of nebulosities around two stars whose mass-loss material appears to have…

High Energy Astrophysical Phenomena · Physics 2018-01-31 Robert A. Fesen , Jack M. M. Neustadt , Christine S. Black , Dan Milisavljevic

We present the results of a sensitive search for high-velocity gas in interstellar absorption lines associated with the Cygnus Loop supernova remnant (SNR). We examine high-resolution, high signal-to-noise ratio optical spectra of six stars…

Astrophysics of Galaxies · Physics 2024-01-03 Adam M. Ritchey , S. R. Federman , David L. Lambert

We present a Hubble Space Telescope/WFPC2 narrow-band H-alpha image of a region on the northeastern limb of the Cygnus Loop supernova remnant. This location provides a detailed example of where the primary blast wave first encounters the…

Astrophysics · Physics 2009-10-31 William P. Blair , Ravi Sankrit , John C. Raymond , Knox S. Long

The Cygnus Loop is classified as a middle-aged supernova remnant (SNR) located below the Galactic equator (l=74, b=-8.6) and 770 pc away from us. Its large size and little confusion with Galactic emission makes it an ideal test ground for…

Astrophysics · Physics 2009-11-07 B. Uyaniker , W. Reich , A. Yar , R. Kothes , E. Fuerst

We present a complete atlas of the Cygnus Loop supernova remnant in the light of [O III] (5007), H alpha, and [S II] (6717, 6731). Despite its shell-like appearance, the Cygnus Loop is not a current example of a Sedov-Taylor blast wave.…

Astrophysics · Physics 2009-10-30 N. A. Levenson , James R. Graham , Luke D. Keller , Matthew J. Richter

Radio continuum and polarization observations of the entire Cygnus Loop at 6cm wavelength were made with the Urumqi 25m telescope. The 6cm map is analysed together with recently published maps from the Effelsberg 100m telescope at 21cm and…

Astrophysics · Physics 2009-11-11 X. H. Sun , W. Reich , J. L. Han , P. Reich , R. Wielebinski

We present total-intensity and polarized-intensity images of the Cygnus Loop supernova remnant (SNR) observed by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The high angular-resolution and high-sensitivity images…

Astrophysics of Galaxies · Physics 2022-11-30 X. H. Sun , X. Y. Gao , W. Reich , P. Jiang , D. Li , H. Yan , X. H. Li

We analyze observations from the Chandra X-ray Observatory of the southeast knot of the Cygnus Loop supernova remnant. In this region, the blast wave propagates through an inhomogeneous environment. Extrinsic differences and subsequent…

Astrophysics · Physics 2009-11-10 N. A. Levenson , James R. Graham

Observations of the oxygen lines [OII]3729 and [OIII]5007 in the medium immediately beyond the Cygnus Loop supernova remnant were carried out with the scanning Fabry-P\'erot spectrophotometer ESOP. Both lines were detected in three…

Astrophysics · Physics 2009-10-31 J. Bohigas , J. L. Sauvageot , A. Decourchelle

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 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 present an unbiased spectroscopic study of the Galactic supernova remnant (SNR) Cygnus Loop using the Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) DR5. LAMOST features both a large field of view and a large…

High Energy Astrophysical Phenomena · Physics 2020-04-21 Ji Yeon Seok , Bon-Chul Koo , Gang Zhao , John C. Raymond

The Cygnus Loop (G74.0-8.5) is a very well-known nearby supernova remnant (SNR) in our Galaxy. Thanks to its large size, brightness, and angular offset from the Galactic plane, it has been studied in detail from radio to $\gamma$-ray…

High Energy Astrophysical Phenomena · Physics 2021-12-15 A. Tutone , J. Ballet , F. Acero , A. D'Aì , G. Cusumano

Core-collapse supernova remnants are the nebular leftover of defunct massive stars which have died during a supernova explosion, mostly while undergoing the red supergiant phase of their evolution. The morphology and emission properties of…

High Energy Astrophysical Phenomena · Physics 2024-04-12 D M A Meyer , P F Velazquez , M Pohl , K Egberts , M Petrov , M A Villagran , D F Torres , R Batzofin

With Hubble Space Telescope Wide-Field Planetary Camera 2 observations of the Cygnus Loop supernova remnant, we examine the interaction of an interstellar cloud with the blast wave on physical scales of 10^15 cm. The shock front is…

Astrophysics · Physics 2009-11-06 N. A. Levenson , James R. Graham

The Cygnus Loop is a well-studied supernova remnant (SNR) that has been observed across the electromagnetic spectrum. Although widely believed to be an SNR shell with a blow- out region in the south, we consider the possibility that this…

Astrophysics of Galaxies · Physics 2016-09-13 J. West , S. Safi-Harb , I. Reichardt , J. Stil , R. Kothes , T. Jaffe , GALFACTS team

We present the C III {\lambda}977, O VI {\lambda}{\lambda}1032, 1038 and N IV] {\lambda}1486 emission line maps of the Cygnus Loop, obtained with the newly processed data of Spectroscopy of Plasma Evolution from Astrophysical Radiation…

Astrophysics of Galaxies · Physics 2014-03-05 Il-Joong Kim , Kwang-Il Seon , Yeo-Myeong Lim , Dae-Hee Lee , Wonyong Han , Kyoung-Wook Min , Jerry Edelstein

In the absence of a parallax distance to a pulsar or a surviving binary in a supernova remnant (SNR), distances to Galactic SNRs are generally very uncertain. However, by combining Gaia data with wide field, multi-fiber echelle…

High Energy Astrophysical Phenomena · Physics 2024-03-22 C. S. Kochanek , J. C. Raymond , N. Caldwell

The Galactic supernova remnant (SNR) Cygnus Loop emerges as an ideal laboratory for analyzing the different radiation mechanisms, as well as the particle acceleration mechanisms at different types of shocks. In order to determine radio…

High Energy Astrophysical Phenomena · Physics 2026-05-21 D. Urošević , M. Andjelić , M. D. Filipović , Z. J. Smeaton , E. Crawford , J. Raymond , D. Onić
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