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Conformal pure radiation with parallel rays
Pure radiation parallel rays pp–waves conformal geometry tractor calculus
2011/8/30
Abstract: We define pure radiation metrics with parallel rays to be n-dimensional pseudo-Riemannian metrics that admit a parallel null line bundle K and whose Ricci tensor vanishes on vectors that are...
Conjugate Effects of Radiation and Joule Heating on Magnetohydrodynamic Free Convection Flow along a Sphere with Heat Generation
Natural Convection, Thermal Radiation, Prandtl Number, Joule Heating, Heat Generation, Magnetohydrodynamics, Nusselt Number
2013/1/30
The conjugate effects of radiation and joule heating on magnetohydrodynamic (MHD) free convection flow along a sphere with heat generation have been investigated in this paper. The governing equations...
Radiation effects on natural convection MHD flow in a rotating vertical porous channel partially filled with a porous medium
Natural convection radiation permeability
2010/9/21
The unsteady natural convection MHD flow of a rotating viscous electrically conducting fluid in a vertical channel partially filled by a porous medium with high porosity in the presence of radiation e...
Emergence of Periodic Structure from Maximizing the Lifetime of a Bound State Coupled to Radiation
Analysis of PDEs (math.AP) Mathematical Physics (math-ph) Optimization and Control (math.OC) Pattern Formation and Solitons (nlin.PS)
2010/11/11
Consider a system governed by the time-dependent Schr\"odinger equation in its ground state. When subjected to weak (size $\epsilon$) parametric forcing by an "ionizing field" (time-varying), the stat...
Null Asymptotics of Solutions of the Einstein-Maxwell Equations in General Relativity and Gravitational Radiation
the Einstein-Maxwell Equations General Relativity
2010/11/15
We prove that for spacetimes solving the Einstein-Maxwell (EM) equations, the electromagnetic field contributes at highest order to the nonlinear memory effect of gravitational waves. In [5] D. Christ...
Extending a Hybrid Godunov Method for Radiation Hydrodynamics to Multiple Dimensions
Hybrid Godunov Method Radiation Hydrodynamics Multiple Dimensions
2010/12/15
This paper presents a hybrid Godunov method for three-dimensional radiation hydrodynamics.
The multidimensional technique outlined in this paper is an extension of the one-dimensional method that was...
Thermodynamic Geometry and Hawking Radiation
Quantum Gravity Hawking Radiation Horizon Perturbations Vaidya Geometry
2010/12/15
This work explores the role of thermodynamic fluctuations in the two parameter Hawking adiating
black hole configurations. The system is characterized by an ensemble of arbitrary mass and radiation f...
Double-diffusive convection-radiation interaction on unsteady MHD flow over a vertical moving porous plate with heat generation and Soret effects
MHD boundary layer porous medium
2010/9/13
The present work analyzes the influence of a first-order homgeneous chemical reaction and thermal radiation on hydromagnetic free convection heat and mass transfer for a viscous fluid past a semi-infi...
Exact Solutions of Incompressible Couette Flow with Constant Temperature and Constant Heat Flux on Walls in the Presence of Radiation
Transient Natural convection Channel flow Heat flux Exact solution Radiation
2009/10/9
The present paper investigates a closed form solution for the transient free convection flow of a viscous fluid between 2 infinite vertical parallel plates in the presence of radiation. The flow is se...
Variable viscosity effects on hydromagnetic boundary layer flow along a continuously moving vertical plate in the presence of radiation
MHD variable viscosity
2010/9/15
This work presents a study of the flow and heat transfer of an incompressible viscous electrically conducting fluid over a continuously moving vertical infinite plate with uniform suction and heat flu...
An Exact Approach to the Oscillator Radiation Process in an Arbitrarily Large Cavity
the Oscillator Radiation Process Arbitrarily Large Cavity
2010/11/2
Starting from a solution of the problem of a mechanical oscillator coupled to a scalar field inside a reflecting sphere of radius $R$, we study the behaviour of the system in free space as the limit ...
The Rest-Frame Darwin Potential from the Lienard-Wiechert Solution in the Radiation Gauge
The Rest-Frame Darwin Potential Lienard-Wiechert Solution Radiation Gauge
2010/11/2
In the semiclassical approximation in which the electric charges of scalar particles are described by Grassmann variables ($Q_i^2=0, Q_iQ_j\ne 0$), it is possible to re-express the Lienard-Wiechert p...
A procedure with a Bayesan approach for calculating upper limits to gravitational wave bursts from coincidence experiments with multiple detectors is described.
PIRINCIPLES OF RADIATION FOR HELMHOLTZ EQUATION IN N-DIMENSIONAL LAYER WITH IMPEDENCE BOUNDARY CONDITIONS
HELMHOLTZ EQUATION BOUNDARY CONDITIONS N-DIMENSIONAL LAYER
2010/3/17
The principle of limit absorption and A. G. Sveshnikov's partial conditions of radition for Helmholts equation in multile dimensinal layer with impedance boundary conditions were studied. The behavior...