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相关论文: Scintillation-Induced Circular Polarization in Pul…

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The phenomenon of Faraday rotation of linearly polarized synchrotron emission in a magneto-ionized medium has been understood and studied for decades. But since the sense of the rotation itself is irrelevant in most contexts, some…

星系天体物理 · 物理学 2021-07-14 K. Ferrière , J. L. West , T. R. Jaffe

Wave propagation properties in a medium are fundamentally affected when this medium is moving instead of at rest. In isotropic dielectric media rotation has two noteworthy contributions: one is a mechanically induced circular birefringence…

等离子体物理 · 物理学 2023-02-22 Renaud Gueroult , Jean-Marcel Rax , Nathaniel J. Fisch

We calculate the polarization of radiation from thick accretion disks with vertically averaged global magnetic field. The polarization arises as a result of the radiation scattering by free electrons in magnetized plasma of a disk. We…

天体物理学 · 物理学 2007-05-23 Yu. N. Gnedin , N. A. Silant'ev , P. S. Shternin

Properties of circularly polarized waves are studied in the pulsar magnetosphere plasma. It is shown that some observational characteristics of the circular polarization observed in the pulsar radio emission can be qualitatively explained…

天体物理学 · 物理学 2009-11-13 G. Gogoberidze , G. Z. Machabeli

Despite some success in explaining the observed polarisation angle swing of radio pulsars within the geometric rotating vector model, many deviations from the expected S-like swing are observed. In this paper we provide a simple and…

太阳与恒星天体物理 · 物理学 2009-11-13 A. Karastergiou

A primordial cosmological magnetic field induces Faraday rotation of the cosmic microwave background polarization. This rotation produces a curl-type polarization component even when the unrotated polarization possesses only gradient-type…

天体物理学 · 物理学 2009-11-10 Arthur Kosowsky , Tina Kahniashvili , George Lavrelashvili , Bharat Ratra

Polarization is a useful probe to investigate the geometries and dynamics of outflow in BAL QSOs. We perform a Monte-Carlo simulation to calculate the polarization produced by resonant and electron scattering in BALR. We find: 1)A rotated…

天体物理学 · 物理学 2007-05-23 Hui-Yuan Wang , Ting-Gui Wang , Jun-Xian Wang

It has been argued in previous papers that an ion-proton plasma is formed at the polar caps of neutron stars with positive polar-cap corotational charge density. The present paper does not offer a theory of the development of turbulence…

高能天体物理现象 · 物理学 2015-12-09 P B Jones

Circular polarization of the cosmic microwave background (CMB) arises in the standard cosmological model from Faraday conversion of the linear polarization generated at the surface of last scatter by various sources of birefringence along…

宇宙学与河外天体物理 · 物理学 2018-06-27 Marc Kamionkowski

Many radio sources like quasars, blazars, radio galaxies, and micro-quasars exhibit circular polarisation (CP) with surprising temporal persistent handedness. As a possible explanation we propose that the CP is due to Faraday conversion…

天体物理学 · 物理学 2009-11-07 Torsten A. Ensslin

We examine the polarization signal of the cosmic microwave background radiation associated with distant clusters. The polarization is induced by the Thomson scattering of microwave photons with ionized gas of clusters and contains…

天体物理学 · 物理学 2016-08-30 Naoki Seto , Misao Sasaki

Polarization measurements provide strong constraints on models for emission from rotation-powered pulsars. We present multiwavelength polarization predictions showing that measurements over a range of frequencies can be particularly…

高能天体物理现象 · 物理学 2017-05-24 Alice K. Harding , Constantinos Kalapotharakos

Using the first station of the Long Wavelength Array (LWA1), we examine polarized pulsar emission between 25 and 88 MHz. Polarized light from pulsars undergoes Faraday rotation as it passes through the magnetized interstellar medium.…

高能天体物理现象 · 物理学 2020-07-01 V. Dike , G. B. Taylor , J. Dowell , K. Stovall

We show that surface waves along interstellar current sheets closely aligned with the line of sight lead to pulsar scintillation properties consistent with those observed. This mechanism naturally produces the length and density scales of…

星系天体物理 · 物理学 2015-06-15 Ue-Li Pen , Yuri Levin

When circularly polarized light is scattered from a rotating target, a rotational Doppler shift (RDS) emerges from an exchange of angular momentum between the spinning object and the electromagnetic field. Here, we used coherently spinning…

We investigate the rotation of the polarization of a light ray propagating in the gravitational field of a circularly polarized laser beam. The rotation consists of a reciprocal part due to gravitational optical activity, and a…

广义相对论与量子宇宙学 · 物理学 2020-01-08 Fabienne Schneiter , Dennis Rätzel , Daniel Braun

We study the gravitational Faraday rotation, on linearly polarized light rays emitted by a pulsar, orbiting another compact object. We relate the rotation angle to the orbital phase of the emitting pulsar, as well as to other parameters…

天体物理学 · 物理学 2008-11-26 Matteo Luca Ruggiero , Angelo Tartaglia

We present a relativistic model for the motion of charged particles in rotating magnetic field lines projected on to a plane perpendicular to the rotation axis. By making an approximation that the projected field lines are straight, an…

天体物理学 · 物理学 2009-11-10 R. M. C. Thomas , R. T. Gangadhara

There are conflicting statements in the literature about the gravitational Faraday rotation of the plane of polarization of polarized electromagnetic radiation travelling through a gravitational wave. This issue is reconsidered using a…

天体物理学 · 物理学 2008-11-26 Valerio Faraoni

We report preliminary results of our study of linear polarization in the pulsar emission at 35 & 327 MHz. We have exploited for this purpose the spectral modulation resulting from the differential Faraday rotation across the observed band.…

天体物理学 · 物理学 2007-05-23 Ashish Asgekar , A. A. Deshpande