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相关论文: A polarization study of the supernova remnant CTB …

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We report new high resolution and high sensitivity radio observations of the extended supernova remnant (SNR) CTB 80 (G69.0+2.7) at 240 MHz, 324 MHz, 618 MHz, and 1380 MHz. The imaging of CTB 80 at 240 MHz and 618 MHz was performed using…

天体物理学 · 物理学 2015-06-24 G. Castelleti , G. Dubner , K. Golap , W. M. Goss , P. F. Velazquez , M. Holdaway , A. P. Rao

We present radio continuum and linear polarisation observations of the pulsar wind nebula CTB87 (G74.9+1.2) with the Effelsberg 100-m radio telescope between 4.75 and 32 GHz. An analysis of these new data including archived low-frequency…

高能天体物理现象 · 物理学 2020-06-17 R. Kothes , W. Reich , S. Safi-Harb , B. Guest , P. Reich , E. Fürst

We have conducted a study at radio wavelengths of the spectral behaviour of the supernova remnant (SNR) CTB 80. Based on an homogenised data set of integrated flux densities, we calculated for the whole SNR a radio index -0.36 +/- 0.02. The…

天体物理学 · 物理学 2009-11-11 G. Castelletti , G. Dubner

We investigated the kinematics of the pulsar wind nebula (PWN) associated with PSR B1951+32 in the old supernova remnant CTB 80 using the Fabry-Perot interferometer of the 6m Special Astrophysical Observatory telescope. In addition to the…

天体物理学 · 物理学 2009-11-10 T. A. Lozinskaya , V. N. Komarova , A. V. Moiseev , S. I. Blinnikov

Deep CCD exposures of the peculiar supernova remnant CTB 80 in the light of major optical lines have been obtained. These images reveal significant shock heated emission in the area of the remnant. The sulfur line image shows emission in…

天体物理学 · 物理学 2009-11-06 F. Mavromatakis , J. Ventura , E. V. Paleologou , J. Papamastorakis

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, high resolution 1420 and 408 MHz continuum images and HI and 12CO (J=1-0) spectral line maps of the diffuse supernova remnant CTB104A (G93.7-0.3). Analysis of the complex continuum emission reveals no significant spectral…

天体物理学 · 物理学 2009-11-07 Bulent Uyaniker , Roland Kothes , Cristopher M. Brunt

CTB 87 (G74.9+1.2) is an evolved supernova remnant (SNR) which hosts a peculiar pulsar wind nebula (PWN). The X-ray peak is offset from that observed in radio and lies towards the edge of the radio nebula. The putative pulsar,…

Sensitive radio continuum surveys of the Galactic plane are ideal for discovering new supernova remnants (SNRs). From the Sino-German {\lambda}6 cm polarisation survey of the Galactic plane, an extended shell-like structure has been found…

星系天体物理 · 物理学 2020-03-11 X. Y. Gao , P. Reich , W. Reich , L. G. Hou , J. L. Han

The supernova remnant (SNR) G315.4$-$2.3 (MSH 14$-$63 or RCW 86) exhibits strong emission across the electromagnetic spectrum. Radio polarization observations probe magnetic fields and will help to understand the evolution of the SNR. We…

星系天体物理 · 物理学 2026-04-22 X. Chen , X. Sun , J. F. Kaczmarek , B. M. Gaensler , P. Slane , J. L. West

We report on the first polarimetric observations at 19 GHz made with the upgraded Australia Telescope Compact Array. Observations were made of the Galactic supernova remnant (SNR) G328.8+0.2. We find the SNR has circular morphology with a…

天体物理学 · 物理学 2009-11-10 S. Johnston , N. M. McClure-Griffiths , B. Koribalski

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…

星系天体物理 · 物理学 2013-01-15 Tyler Foster , Brendan Cooper , Wolfgang Reich , Roland Kothes , Jennifer West

We have observed 79 supernova remnants (SNRs) with the Urumqi 25m telescope at 6cm during the Sino-German 6cm polarization survey of the Galactic plane. We measured flux densities of SNRs at 6cm, some of which are the first ever measured or…

星系天体物理 · 物理学 2014-06-03 J. L. Han , X. Y. Gao , X. H. Sun , W. Reich , L. Xiao , P. Reich , J. W. Xu , W. B. Shi , E. Fuerst , R. Wielebinski

CTB 80 (G69.0+2.7) is a relatively old (50--80 kyr) supernova remnant (SNR) with a complex radio morphology showing three extended radio arms and a radio and X-ray nebula near the location of the pulsar PSR B1951+32. We report on a study of…

高能天体物理现象 · 物理学 2021-01-20 M. Araya , C. Herrera

CMB experiments aiming at a precise measurement of the CMB polarization, such as the Planck satellite, need a strong polarized absolute calibrator on the sky to accurately set the detectors polarization angle and the cross-polarization…

The BICEP3 CMB Polarimeter is a small-aperture refracting telescope located at the South Pole and is specifically designed to search for the possible signature of inflationary gravitational waves in the Cosmic Microwave Background (CMB).…

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

STPpol, POLARBEAR and BICEP2 have recently measured the cosmic microwave background (CMB) B-mode polarization in various sky regions of several tens of square degrees and obtained BB power spectra in the multipole range 20-3000, detecting…

宇宙学与河外天体物理 · 物理学 2014-08-14 Sperello di Serego Alighieri , Wei-Tou Ni , Wei-Ping Pan

Using time-resolved two-dimensional aperture photometry we have put upper limits on the pulsed emission from two proposed optical counterparts for PSR B1951+32. Our pulsed upper limits of m_{vpulsed}>23.3, m_{bpulsed}>24.4$, for the first…

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