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相关论文: New lambda6cm observations of the Cygnus Loop

200 篇论文

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 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…

高能天体物理现象 · 物理学 2015-06-05 Satoru Katsuda , Hiroshi Tsunemi , Koji Mori , Hiroyuki Uchida , Robert Petre , Shin'ya Yamada , Toru Tamagawa

(Abridged) We have conducted a total intensity and polarization survey of the Galactic plane at 6 cm using the Urumqi 25 m telescope for the Galactic longitude range of 10 deg<l<60 deg and the Galactic latitude range of |b|<5 deg. Missing…

星系天体物理 · 物理学 2015-05-20 X. H. Sun , W. Reich , J. L. Han , P. Reich , R. Wielebinski , C. Wang , P. Müller

Large-scale radio continuum surveys have good potential for discovering new Galactic supernova remnants (SNRs). Surveys of the Galactic plane are often limited in the Galactic latitude of |b| ~ 5 degree. SNRs at high latitudes, such as the…

星系天体物理 · 物理学 2014-09-05 X. Y. Gao , J. L. Han

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…

星系天体物理 · 物理学 2014-03-05 Il-Joong Kim , Kwang-Il Seon , Yeo-Myeong Lim , Dae-Hee Lee , Wonyong Han , Kyoung-Wook Min , Jerry Edelstein

Radiative shock waves in the Cygnus Loop and other supernova remnants show different morphologies in [O III] and H{\alpha} emission. We use HST spectra and narrowband images to study the development of turbulence in the cooling region…

We present a collection of double-lobed sources towards a 20 sq deg area of the Cygnus region at the northern sky, observed at 325 and 610~MHz with the Giant Metrewave Radio Telescope. The 10'' resolution achieved at 325 MHz is 5.5 times…

星系天体物理 · 物理学 2021-09-15 J. Saponara , P. Benaglia , I. Andruchow , C. H. Ishwara-Chandra , H. T. Intema

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 have obtained a contiguous set of long-slit spectra of a shock wave in the Cygnus Loop to investigate its structure, which is far from the morphology predicted by 1D models. Proper motions from Hubble Space Telescope images combined with…

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

We present far ultraviolet spectra of a fast (~ 300 km/s) nonradiative shock in the Cygnus Loop supernova remnant. Our observations were performed with the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite, covering the wavelength…

天体物理学 · 物理学 2009-10-31 Parviz Ghavamian , John C. Raymond , William P. Blair

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

We report the detection of linearly polarized emission at 53 and 89 $\mu$m, from the radio-loud active galactic nucleus (AGN) Cygnus A using HAWC+ onboard SOFIA. We measure a highly polarized core of $11\pm3$% and $9\pm2$% with a position…

星系天体物理 · 物理学 2018-07-25 Enrique Lopez-Rodriguez , Robert Antonucci , Ranga-ram Chary , Makoto Kishimoto

We have observed the Cygnus Loop from the northeast (NE) rim to the southwest (SW) rim using Suzaku in 10 pointings that is just north of previous XMM-Newton observations. The observation data obtained were divided into 45 rectangular…

天体物理学 · 物理学 2008-10-29 Masashi Kimura , Hiroshi Tsunemi , Satoru Katsuda , Hiroyuki Uchida

G156.2+5.7 is a large supernova remnant (SNR) first discovered in the ROSAT X-ray survey but radio observations are rare because of its low surface brightness and large size. Radio continuum and polarization images of the SNR G156.2+5.7 at…

天体物理学 · 物理学 2009-11-13 J. W. Xu , J. L. Han , X. H. Sun , W. Reich , L. Xiao , P. Reich , R. Wielebinski

The Sino-German 6cm polarization survey has mapped in total intensity and polarization intensity over an area of approximately 2200 square degrees in the Galactic disk. This survey provides an opportunity to search for Galactic supernova…

星系天体物理 · 物理学 2015-06-15 X. Y. Gao , X. H. Sun , J. L. Han , W. Reich , P. Reich , R. Wielebinski

We present new 6 and 20 cm Very Large Array (VLA) observations of polarized continuum emission of roughly 0.5 square degrees of the Galactic center (GC) region. The 6 cm observations detect diffuse linearly-polarized emission throughout the…

星系天体物理 · 物理学 2015-05-27 C. J. Law , M. A. Brentjens , G. Novak

High quality 4500-6800 A spectropolarimetric observations of the Circinus galaxy are reported. These show polarized and relatively broad (FWHM~3300 km/s) Halpha (as well as marginal Hbeta) arising from a <3" (<60 pc) region centered on the…

天体物理学 · 物理学 2007-05-23 E. Oliva , A. Marconi , A. Cimatti , S. di Serego Alighieri

We report on full-polarization radio observations of the Perseus cluster (Abell 426) using the Westerbork Synthesis Radio Telescope (WSRT) at wavelengths from 81-95 cm. We have employed a novel technique, Rotation Measure synthesis…

天体物理学 · 物理学 2009-11-13 A. G. de Bruyn , M. A. Brentjens