English
Related papers

Related papers: Faraday Rotation Distributions from Stellar Magnet…

200 papers

We have analyzed analytically the Faraday rotation of an electromagnetic wave for magnetoactive thin metallic film with a nanostructured surface profile. Periodical as well as random surface profiles were considered. The plasmon…

Mesoscale and Nanoscale Physics · Physics 2014-02-21 Zhyrair Gevorkian , Vladimir Gasparian

The origin of magnetic fields in the Universe is an open problem in astrophysics and fundamental physics. Our present-day knowledge is limited to regions of strong magnetic fields and to star-forming disks of galaxies. Low-energy electrons…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-02 Rainer Beck

We have detected significant Rotation Measure variations for 9 bright pulsars, as a function of pulse longitude. An additional sample of 10 pulsars showed a rather constant RM with phase, yet a small degree of RM fluctuation is visible in…

Astrophysics of Galaxies · Physics 2015-05-13 A. Noutsos , A. Karastergiou , M. Kramer , S. Johnston , B. W. Stappers

Studying the nature and origin of the intergalactic magnetic field (IGMF) is an outstanding problem of cosmology. Measuring Faraday rotation would be a promising method to explore the IGMF in the large-scale structure (LSS) of the universe.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Takuya Akahori , Dongsu Ryu

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…

Astrophysics of Galaxies · Physics 2015-05-28 Lisa Harvey-Smith , Gregory J. Madsen , Bryan M. Gaensler

Deriving the Faraday rotation measure (RM) of quasar absorption line systems, which are tracers of high-redshift galaxies intervening background quasars, is a powerful tool for probing magnetic fields in distant galaxies. Statistically…

We revisit the polarisation induced by Faraday rotation when Cosmic Microwave Background photons traverse magnetised plasma. We compute the secondary B-mode angular power spectrum from Faraday rotation due to magnetic fields in galaxies and…

Astrophysics · Physics 2009-04-17 Hiroyuki Tashiro , Nabila Aghanim , Mathieu Langer

The extreme, time-variable Faraday rotation observed in the repeating fast radio burst (FRB) 121102 and its associated persistent synchrotron source demonstrates that some FRBs originate in dense, dynamic and possibly relativistic…

High Energy Astrophysical Phenomena · Physics 2019-03-27 H. K. Vedantham , V. Ravi

In this work, we present a new mosaic created with the second release of LOFAR Two-Metre Sky Survey data (LoTSS-DR2), which probes polarised synchrotron emission in the high-latitude inner Galaxy. Our objective is to characterise the…

Rotationally-split modes can provide valuable information about the internal rotation profile of stars. This has been used for years to infer the internal rotation behavior of the Sun. The present work discusses the potential additional…

Solar and Stellar Astrophysics · Physics 2015-05-18 J. C. Suárez , L. Andrade , M. J. Goupil , E. Janot-Pacheco

We present multi-frequency polarization observations of the diffuse radio synchrotron background modulated by Faraday rotation. No total intensity is observed, indicating that total intensity does not vary on scales below approximately a…

Astrophysics · Physics 2007-05-23 M. Haverkorn , P. Katgert , A. G. de Bruyn

The problem of cosmic-ray scattering in the turbulent electromagnetic fields of the interstellar medium and the solar wind is of great importance due to the variety of applications of the resulting diffusion coefficients. Examples are…

High Energy Astrophysical Phenomena · Physics 2015-05-20 R. C. Tautz

The Galactic Faraday depth sky is a tracer for both the Galactic magnetic field and the thermal electron distribution. It has been previously reconstructed from polarimetric measurements of extra-galactic point sources. Here, we improve on…

Astrophysics of Galaxies · Physics 2020-01-29 Sebastian Hutschenreuter , Torsten A. Enßlin

One of the major discoveries of asteroseismology is the signature of a strong extraction of angular momentum (AM) in the radiative zones of stars across the entire Hertzsprung-Russell diagram, resulting in weak core-to-surface rotation…

Solar and Stellar Astrophysics · Physics 2022-09-21 Hachem Dhouib , Stéphane Mathis , Lisa Bugnet , Timothy Van Reeth , Conny Aerts

Magnetic fields play a fundamental role in the formation of protostellar winds. In the magneto-centrifugal models, poloidal magnetic fields launch winds from accretion disks, and fast-rotating gas twists the fields into toroidal geometry…

Solar and Stellar Astrophysics · Physics 2026-04-15 Tao-Chung Ching , Zhi-Yun Li , Qizhou Zhang , Josep Miquel Girart , Shih-Ping Lai , Chin-Fei Lee , Di Li , Ramprasad Rao , Emmanuel Momjian

We use Faraday rotation measurements from the latest catalog LoTSS DR2 from LOFAR to probe intergalactic magnetic fields. To identify the extragalactic component of the observed rotation measure (RM) we use two different techniques:…

Cosmology and Nongalactic Astrophysics · Physics 2024-04-29 Kyrylo Bondarenko , Alexey Boyarsky , Anastasia Sokolenko , Ievgen Vovk

Several multi-frequency polarization studies have shown the presence of systematic Faraday Rotation gradients across the parsec-scale jets of Active Galactic Nuclei (AGN), taken to be due to the systematic variation of the line-of-sight…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 M. Mahmud , D. C. Gabuzda , V. Bezrukovs

Magnetic fields in large scale structure filaments beyond galaxy clusters remain poorly understood. Superclusters offer a unique setting to study these low density environments, where weak signals make detection challenging. The Faraday…

Cosmology and Nongalactic Astrophysics · Physics 2025-03-13 G. V. Pignataro , S. P. O'Sullivan , A. Bonafede , G. Bernardi , F. Vazza , E. Carretti

Faraday rotation measure synthesis is a method for analyzing multichannel polarized radio emissions, and it has emerged as an important tool in the study of galactic and extra-galactic magnetic fields. The method requires the recovery of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 M. Andrecut , J. M. Stil , A. R. Taylor

Optical and infrared continuum polarization from the interstellar medium is known to generally be due to irregular dust grains aligned with the magnetic field. This provides an important tool to probe the geometry and strength of those…

Astrophysics of Galaxies · Physics 2019-03-20 Ilija Medan , B-G Andersson