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相关论文: Analytical solution of the radiative transfer equa…

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We come back to the analytical solution of the standard transfer problem in a stellar atmosphere. It consists in solving the radiative transfer equation in a homogeneous and isothermal plane-parallel atmosphere, with light scattering taken…

天体物理学 · 物理学 2007-05-23 L. Chevallier , B. Rutily

We present the theoretical framework and numerical methods we have implemented to solve the problem of the generation and transfer of polarized radiation in spectral lines out of local thermodynamical equilibrium, while accounting for…

太阳与恒星天体物理 · 物理学 2022-09-01 Ernest Alsina Ballester , Luca Belluzzi , Javier Trujillo Bueno

We study the formation of the Stokes profiles of the He I multiplet at 10830 A when relaxing two of the approximations that are often considered in the modeling of this multiplet, namely the lack of self-consistent radiation transfer and…

太阳与恒星天体物理 · 物理学 2023-07-05 Andres Vicente Arevalo , Jiri Stepan , Tanausu del Pino Aleman , Maria Jesus Martinez Gonzalez

The aim of this paper is to develop a mathematical framework for opto-elastography. In opto-elastography, a mechanical perturbation of the medium produces a decorrelation of optical speckle patterns due to the displacements of optical…

数学物理 · 物理学 2013-06-19 Habib Ammari , Emmanuel Bossy , Josselin Garnier , Wenjia Jing , Laurent Seppecher

This article is a direct continuation of [1] where we begun the study of the transfer matrix spectral problem for the cyclic representations of the trigonometric 6-vertex reflection algebra associated to the Bazhanov-Stroganov Lax operator.…

数学物理 · 物理学 2018-09-26 J. M. Maillet , G. Niccoli , B. Pezelier

Stokes Muller formalism is important to understand the optical properties of materials by measuring the change in the polarization state of light upon scattering. The formalism can be extended to nonlinear scattering processes involving two…

光学 · 物理学 2015-10-21 Chitra Shaji , Raseena Ismail , SVM Satyanarayana , Alok Sharan

In a medium where the dielectric permittivity is perturbed in the presence of an acoustic wave, optical scattering generates frequency-shifted light. In this paper we consider the inverse problem of recovering the optical properties of this…

偏微分方程分析 · 数学 2019-10-14 Francis J. Chung , Jeremy G. Hoskins , John C. Schotland

Using a quantum electrodynamical approach, we derive the scattering phase matrices for polarized radiation involving forbidden line transitions and in the presence of an external magnetic field. The case of (J=0->2->0) scattering is…

天体物理学 · 物理学 2008-05-27 Yee Yee Oo , Phyu Phyu San , M. Sampoorna , K. N. Nagendra , G. Ramachandran

For the rigid, nonrotating motion of an extended charge in an arbitrary electromagnetic field, an equation of motion is derived by Lorentz-invariantly calculating the 4-Lorentz force = external 4-force + 4-self-force, acting upon the…

数学物理 · 物理学 2007-05-23 Helmut Stoeckel

In this work we study the radiative transfer equation in the forward-peaked regime in free space. Specifically, it is shown that the equation is well-posed by proving instantaneous regularization of weak solutions for arbitrary initial…

偏微分方程分析 · 数学 2014-11-04 Ricardo Alonso , Weiran Sun

The linear perturbation theory of inhomogeneous reionization (LPTR) has been developed as an analytical tool for predicting the global ionized fraction and large-scale power spectrum of ionized density fluctuations during reionization. In…

宇宙学与河外天体物理 · 物理学 2015-05-05 Yi Mao , Anson D'Aloisio , Benjamin D. Wandelt , Jun Zhang , Paul R. Shapiro

To describe a relativistic hydrogen atom we used the Poincare-covariant model of a two particle system with gauge invariant potential. The kernel of the radial integral equation is obtained which describes a system of two fermions with…

量子物理 · 物理学 2020-12-14 V. V. Andreev

A model potential for two-particle relativistic systems is investigated in the framework of Poincare-invariant quantum mechanics (or relativistic Hamiltonian dynamics). The potential considered allows to reduce the main integro-differential…

高能物理 - 唯象学 · 物理学 2007-05-23 V. V. Andreev , M. N. Sergeenko

Two Fokker actions and corresponding equations of motion are obtained for two point particles in a post-Minkowski framework, in which the field of each particle is given by the half-retarded + half-advanced solution to the linearized…

广义相对论与量子宇宙学 · 物理学 2009-11-11 John L. Friedman , Koji Uryu

We simplify the formalism of Polder and Van Hove [Phys.Rev.B {\bf 4}, 3303(1971)], which was developed to calculate the heat transfer between macroscopic and nanoscale bodies of arbitrary shape, dispersive and adsorptive dielectric…

材料科学 · 物理学 2009-11-11 A. I. Volokitin , B. N. J. Persson

The transfer of polarized radiation in magnetized and non-magnetized relativistic plasmas is an area of research with numerous flaws and gaps. The present paper is aimed at filling some gaps and eliminating the flaws. Starting from a…

天体物理学 · 物理学 2009-11-13 Roman Shcherbakov

Thermal Radiative Transfer (TRT) is the dominant energy transfer mechanism in high-energy density physics with applications in inertial confinement fusion and astrophysics. The stiff interactions between the material and radiation fields…

计算物理 · 物理学 2019-05-01 Hans Hammer , HyeongKae Park , Luis Chacon

This paper focuses on the nonlinear Milne problem of the radiative heat transfer system on the half-space. The nonlinear model is described by a second order ODE for temperature coupled to transport equation for radiative intensity. The…

偏微分方程分析 · 数学 2022-07-25 Mohamed Ghattassi , Xiaokai Huo , Nader Masmoudi

The purpose is to introduce in a clear and direct way the students of undergraduate courses in physics and/or astronomy to the subject of radiative transfer. A pedagogical revision is made in order to obtain the radiative transfer equation,…

天体物理学 · 物理学 2008-07-04 Mauricio Duque , Leonardo Castaneda , Carlos Duque

The transport equations for polarized radiation transfer in non-Riemannian, Weyl-Cartan type space-times are derived, with the effects of both torsion and non-metricity included. To obtain the basic propagation equations we use the tangent…

广义相对论与量子宇宙学 · 物理学 2009-11-11 K. S. Cheng , T. Harko , X. Y. Wang