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相关论文: The ROSAT-HRI X-Ray Survey of the Cygnus Loop

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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.…

天体物理学 · 物理学 2009-10-30 N. A. Levenson , James R. Graham , Luke D. Keller , Matthew J. Richter

We performed spectroscopic X-ray observations of the eastern and northern regions of the Cygnus Loop with the ASCA observatory. The X-ray surface brightness of these regions shows a complex structure in the ROSAT all-sky survey image. We…

天体物理学 · 物理学 2016-08-30 Emi Miyata , Hiroshi Tsunemi

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…

天体物理学 · 物理学 2009-11-10 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…

星系天体物理 · 物理学 2016-09-13 J. West , S. Safi-Harb , I. Reichardt , J. Stil , R. Kothes , T. Jaffe , GALFACTS team

The Cygnus X-ray Emission Spectroscopic Survey (CyXESS) sounding rocket payload was launched from White Sands Missile Range on 2006 November 20 and obtained a high resolution spectrum of the Cygnus Loop supernova remnant in the soft X-rays.…

天体物理学 · 物理学 2009-11-13 Randall L. McEntaffer , Webster Cash

The XA region of the Cygnus Loop is a bright knot of X-ray emission on the eastern edge of the supernova remnant resulting from the interaction of the supernova blast wave with density enhancements at the edge of a precursor formed cavity.…

高能天体物理现象 · 物理学 2015-05-27 Randall L. McEntaffer , Thomas Brantseg

The Cygnus Loop is a nearby supernova remnant (SNR) observed across the electromagnetic spectrum. With the analysis of 6 years of Fermi/LAT data we find that, what previous studies had considered a single source, consists of an extended…

高能天体物理现象 · 物理学 2015-03-04 I. Reichardt , R. Terrier , J. West , S. Safi-Harb , E. de Oña-Wilhelmi , J. Rico

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…

高能天体物理现象 · 物理学 2024-04-12 D M A Meyer , P F Velazquez , M Pohl , K Egberts , M Petrov , M A Villagran , D F Torres , R Batzofin

We use the Chandra X-ray Observatory to analyze interactions of the blast wave and the inhomogeneous interstellar medium on the western limb of the Cygnus Loop supernova remnant. This field of view includes an initial interaction between…

天体物理学 · 物理学 2008-11-26 N. A. Levenson , J. R. Graham , J. L. Walters

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…

天体物理学 · 物理学 2009-10-31 J. Bohigas , J. L. Sauvageot , A. Decourchelle

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…

高能天体物理现象 · 物理学 2021-12-15 A. Tutone , J. Ballet , F. Acero , A. D'Aì , G. Cusumano

We conducted a comprehensive study on the shell structure of the Cygnus Loop using 41 observation data obtained by the Suzaku and the XMM-Newton satellites. To investigate the detailed plasma structure of the Cygnus Loop, we divided our…

高能天体物理现象 · 物理学 2011-02-11 Hiroyuki Uchida , Hiroshi Tsunemi , Satoru Katsuda , Masashi Kimura , Hiroko Kosugi , Hiroaki Takahashi

X-ray emitting features originating from the interaction of supernova shock waves with small interstellar gas clouds are revealed in many X-ray observations of evolved supernova remnants (e.g. Cygnus Loop and Vela), but their interpretation…

高能天体物理现象 · 物理学 2015-05-18 S. Orlando , F. Bocchino , M. Miceli , X. Zhou , F. Reale , G. Peres

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…

高能天体物理现象 · 物理学 2018-01-31 Robert A. Fesen , Jack M. M. Neustadt , Christine S. Black , Dan Milisavljevic

We observed the southwestern region of the Cygnus Loop in two pointings with \textit{XMM-Newton}. The region observed is called the "blow-out" region that is extended further in the south. The origin of the "blow-out" is not well understood…

天体物理学 · 物理学 2009-11-13 Hiroyuki Uchida , Hiroshi Tsunemi , Satoru Katsuda , Masashi Kimura

We present here the results of the mapping observation of the Cygnus Loop with the Gas Imaging Spectrometer (GIS) onboard the ASCA observatory. The data covered the entire region of the Cygnus Loop. Spatial resolution of the GIS is moderate…

天体物理学 · 物理学 2009-10-31 E. Miyata , H. Tsunemi , K. Koyama , Y. Ishisaki

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…

高能天体物理现象 · 物理学 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

The XA region of the Cygnus Loop is a complex zone of radiative and nonradiative shocks interacting with interstellar clouds. We combine five far ultraviolet spectral observations from the Hopkins Ultraviolet Telescope (HUT), a grid of 24…

天体物理学 · 物理学 2007-05-23 Charles W. Danforth , William P. Blair , John C. Raymond

The Cygnus Loop is among the brightest and best studied evolved Galactic supernova remnants. However, its distance has remained uncertain thus undermining quantitative understanding about many of its fundamental properties. Here we present…

高能天体物理现象 · 物理学 2018-10-10 Robert A. Fesen , Kathryn E. Weil , Ignacio A. Cisneros , William P. Blair , John C. Raymond

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…

星系天体物理 · 物理学 2022-11-30 X. H. Sun , X. Y. Gao , W. Reich , P. Jiang , D. Li , H. Yan , X. H. Li
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