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相关论文: A Faraday Rotation Study of the Stellar Bubble and…

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We report Faraday rotation measurements of 11 extragalactic radio sources with lines of sight through the Rosette Nebula, a prominent HII region associated with the star cluster NGC 2244. It is also a prototypical example of a "stellar…

太阳与恒星天体物理 · 物理学 2016-04-27 Allison H. Costa , Steven R. Spangler , Joseph R. Sink , Shea Brown , Sui Ann Mao

We report the results of Faraday rotation measurements of 23 background radio sources whose lines of sight pass through or close to the Rosette Nebula. The Rosette Nebula is an excellent candidate for studies of super bubbles associated…

太阳与恒星天体物理 · 物理学 2017-04-19 Allison H. Savage , Steven R. Spangler , Patrick D. Fischer

The Galactic magnetic field is an integral constituent of the interstellar medium (ISM), and knowledge of its structure is crucial to understanding Galactic dynamics. The Rotation Measures (RM) of extragalactic (EG) sources have been the…

星系天体物理 · 物理学 2019-03-28 Anna Ordog , Rebecca A. Booth , Cameron L. Van Eck , Jo-Anne C. Brown , Thomas L. Landecker

Faraday rotation of radio source polarization provides a measure of the integrated magnetic field along the observational lines of sight. We compare a new, large sample of Faraday rotation measures (RMs) of polarized extragalactic sources…

天体物理学 · 物理学 2009-11-13 Yongzhong Xu , Philipp P. Kronberg , Salman Habib , Quentin W. Dufton

We present a study of the line-of-sight magnetic fields in five large-diameter Galactic HII regions. Using the Faraday rotation of background polarized radio sources, as well as dust-corrected H-alpha surface brightness as a probe of…

星系天体物理 · 物理学 2015-05-28 Lisa Harvey-Smith , Gregory J. Madsen , Bryan M. Gaensler

We present 2-4 GHz observations of polarized radio galaxies towards eight fast radio bursts (FRBs), producing grids of Faraday rotation measure (RM) sources with sky densities of 9-28 polarized sources per square degree. Using a Bayesian…

Rotation measures of pulsars and extragalactic point sources have been known to reveal large-scale antisymmetries in the Faraday rotation sky with respect to the Galactic plane and halo that have been interpreted as signatures of the mean…

Faraday rotation measures (RMs) of extragalactic radio sources provide information on line-of-sight magnetic fields, including contributions from our Galaxy, source environments, and the intergalactic medium (IGM). Looking at differences in…

宇宙学与河外天体物理 · 物理学 2019-06-26 T. Vernstrom , B. Gaensler , L. Rudnick , H. Andernach

Faraday rotation describes the change of the linear polarization angle of radiation passing through a magnetized plasma and it is quantified by the rotation measure (RM), which is related to the line-of-sight (LOS) magnetic field component…

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

We investigate the Faraday rotation measure (RM) due to the intergalactic magnetic field (IGMF) through the cosmic web up to cosmological distances, using a model IGMF based on turbulence dynamo in the large-scale structure of the universe.…

宇宙学与河外天体物理 · 物理学 2015-05-28 Takuya Akahori , Dongsu Ryu

To determine the properties of the Faraday screen and the magnetic field near the central region of the Galaxy, we measured the Faraday rotation measure (RM) towards 60 background extragalactic source components through the -6 deg < l <6…

天体物理学 · 物理学 2009-11-13 Subhashis Roy , A. Pramesh Rao , Ravi Subrahmanyan

Rotation measure (RM) grids of extragalactic radio sources have been widely used for studying cosmic magnetism. But their potential for exploring the intergalactic magnetic field (IGMF) in filaments of galaxies is unclear, since other…

宇宙学与河外天体物理 · 物理学 2015-06-22 Takuya Akahori , B. M. Gaensler , Dongsu Ryu

Much of the information about the magnetic field in the Milky Way and other galaxies comes from measurements which are path integrals, such as Faraday rotation and the polarization of synchrotron radiation of cosmic ray electrons. The…

星系天体物理 · 物理学 2021-01-05 Steven R. Spangler

To study some characteristics of the interstellar medium, observational data of pulsars with large Faraday rotation values (|RM|> 300 rad / m2) were used. It was suggested and justified that large |RM| values can be due to the contribution…

星系天体物理 · 物理学 2018-08-13 R. R. Andreasyan , H. R. Andreasyan , G. M. Paronyan

We explore the magneto-ionic environment of the isolated radio galaxy B2 0755+37 using detailed imaging of the distributions of Faraday rotation and depolarization over the radio source from Very Large Array observations at 1385,1465 and…

宇宙学与河外天体物理 · 物理学 2015-06-04 D. Guidetti , R. A. Laing , J. H. Croston , A. H. Bridle , P. Parma

We present detailed imaging of Faraday rotation and depolarization for the radio galaxies 0206+35, 3C 270, 3C 353 and M 84, based on Very Large Array observations at multiple frequencies in the range 1365 to 8440 MHz. This work suggests a…

宇宙学与河外天体物理 · 物理学 2015-05-27 D. Guidetti , R. A. Laing , A. H. Bridle , P. Parma , L. Gregorini

Faraday rotation measures (RMs) of fast radio bursts (FRBs) offer the prospect of directly measuring extragalactic magnetic fields. We present an analysis of the RMs of ten as yet non-repeating FRBs detected and localized to host galaxies…

We present new deep multi-frequency radio-polarimetric images of a sample of high redshift radio galaxies (HzRGs), having redshift between 1.7 and 4.1. The radio data at 4.7 and 8.2 GHz were taken with the Very Large Array in the A…

天体物理学 · 物理学 2019-08-17 L. Pentericci , W. Van Reeven , C. L. Carilli , H. J. A. Rottgering , G. K. Miley

The goal of this work is to investigate the Faraday rotation measure (RM) of radio galaxies in hot galaxy clusters in order to establish a possible connection between the magnetic field strength and the gas temperature of the intracluster…

宇宙学与河外天体物理 · 物理学 2015-05-19 F. Govoni , K. Dolag , M. Murgia , L. Feretti , S. Schindler , G. Giovannini , W. Boschin , V. Vacca , A. Bonafede
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