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High precision polarization measurements open new opportunities for the study of the magnetic field structure as traced by polarimetric measurements of the interstellar dust emission. Polarization parameters suffer from bias in the presence…

星系天体物理 · 物理学 2017-03-15 D. Alina , L. Montier , I. Ristorcelli , J. -P. Bernard , F. Levrier , E. Abdikamalov

Rotations of the electric vector position angle (EVPA) in blazars are often close to an integral multiple of 180$^\circ$. There are multiple examples of this in the literature, and our analysis here, of the optical polarization data from…

高能天体物理现象 · 物理学 2020-04-22 Marshall H. Cohen , Tuomas Savolainen

Some radio pulsar profiles (in particular those of millisecond pulsars contain wide emission structures which cover large intervals of pulse phase. Local distortions of an average curve of polarisation angle (PA) can be identified in such…

高能天体物理现象 · 物理学 2016-08-03 J. Dyks , M. Serylak , S. Oslowski , L. Saha , L. Guillemot , I. Cognard , B. Rudak

Pulsar radio emission is modelled as a sum of two completely polarized non-orthogonal modes with the randomly varying Stokes parameters and intensity ratio. The modes are the result of polarization evolution of the original natural waves in…

天体物理学 · 物理学 2009-11-11 S. A. Petrova

The linear polarization position angle (PPA) of pulsar emission shows a wide variety of structures, which deviates from the classical rotating vector model. In this study we investigate the effect on the PPA due to emission arising from a…

天体物理学 · 物理学 2007-05-23 D. Mitra , J. H. Seiradakis

The polarization of an X-ray beam that produces electrons with velocity components perpendicular to the beam generates an azimuthal distribution of the ejected electrons. We present methods for simulating and for analyzing the angular…

天体物理仪器与方法 · 物理学 2015-03-10 C. G. Montgomery , J. H. Swank

We analyze the polarization structure of gravitational waves in the framework of Extended Relativity (ER), using the deviation tensor as the fundamental observable quantity. Starting from the point-source solution, we derive the radiation…

广义相对论与量子宇宙学 · 物理学 2026-05-05 Yaakov Friedman

X-ray polarimetry of accreting compact objects has revealed fast time variations in the polarization angle (PA), suggesting that the geometry and/or optical depth of the Comptonization region is changing rapidly. This prompts investigations…

高能天体物理现象 · 物理学 2025-10-17 Hong Li , Qing-Chang Zhao , Hua Feng , Lian Tao , Sergey S. Tsygankov

We have analyzed the polarization properties of pulsars at an observing frequency of 4.9 GHz. Together with low frequency data, we are able to trace polarization profiles over more than three octaves into an interesting frequency regime. At…

天体物理学 · 物理学 2007-05-23 A. von Hoensbroech , J. Kijak , A. Krawczyk

Linearly polarized emission is described, in general, in terms of the Stokes parameters $Q$ and $U$, from which the polarization intensity and polarization angle can be determined. Although the polarization intensity and polarization angle…

星系天体物理 · 物理学 2018-01-31 C. A. Herron , B. M. Gaensler , G. F. Lewis , N. M. McClure-Griffiths

The strong coupling between the spatial and polarisation degrees of freedom (DoF) in vector modes enables a diverse array of exotic, inhomogeneous polarisation distributions through a non-separable superposition, which are conventionally…

Longitudinal polarisation of the lepton beam is a key ingredient to the success of the world's unique e\pmp ring collider HERA. This article aims at providing a brief introduction to the physics motivation for deep-inelastic scattering of…

仪器与探测器 · 物理学 2012-01-19 Blanka Sobloher

A statistical model for the polarization of pulsar radio emission is enhanced to account for the heavy modulation of the emission, the possible covariance of the Stokes parameters, and the observed asymmetries in the distributions of total…

高能天体物理现象 · 物理学 2022-10-12 M. M. McKinnon

We study the polarization of an electron scattered by different static potentials. The initial state of the electron is chosen as a wavepacket to construct the definite orbital angular momentum, and the final polarization of the electron,…

高能物理 - 唯象学 · 物理学 2024-11-21 Hao-Hao Peng , Ren-Hong Fang

The discrepancy between polarized and unpolarized measurements of the proton's electromagnetic form factors is striking, and suggests that two-photon exchange (TPE) may be playing a larger role in elastic electron-proton scattering than is…

核实验 · 物理学 2018-06-13 Axel Schmidt

This paper describes a method for the explicit reconstruction and visualization of various polarization ellipses from the intensities measured after a rotating polarizer. The state of polarization of a light beam is represented by the…

光学 · 物理学 2022-11-29 Ramonika Sengupta , Brijesh Tripathi , Asha Adhiya

Polarisation of radio pulsar profiles involves a number of poorly understood, intriguing phenomena, such as the existence of comparable amounts of orthogonal polarisation modes (OPMs), strong distortions of polarisation angle (PA) curves…

高能天体物理现象 · 物理学 2017-05-26 J. Dyks

We have monitored the R-band optical linear polarisation of ten jetted NLSy1 galaxies with the aim to quantify their variability and search for candidate long rotation of the polarisation plane. In all cases for which adequate datasets are…

高能天体物理现象 · 物理学 2018-07-30 E. Angelakis , S. Kiehlmann , I. Myserlis , D. Blinov , J. Eggen , R. Itoh , S. Komossa , N. Marchilli , J. A. Zensus

This paper examines the detailed sub-milliarcsecond polarization properties of an individual SiO maser feature displaying a rotation in polarization electric vector position angle of approximately \pi/2 across the feature. Such rotations…

太阳与恒星天体物理 · 物理学 2015-05-30 A. J. Kemball , P. J. Diamond , L. Richter , I. Gonidakis , R. Xue

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