Results 11 to 20 of about 277,108 (344)

crash: a radiative transfer scheme [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2003
We present a largely improved version of CRASH, a 3-D radiative transfer code that treats the effects of ionizing radiation propagating through a given inhomogeneous H/He cosmological density field, on the physical conditions of the gas. The code, based on a Monte Carlo technique, self-consistently calculates the time evolution of gas temperature and ...
MASELLI A., FERRARA, ANDREA, CIARDI B.
openaire   +6 more sources

General relativistic radiative transfer [PDF]

open access: yesAstronomy & Astrophysics, 2006
We present a general method to calculate radiative transfer including scattering in the continuum as well as in lines in spherically symmetric systems that are influenced by the effects of general relativity (GR). We utilize a comoving wavelength ansatz that allows to resolve spectral lines throughout the atmosphere.
Peter H. Hauschildt   +3 more
openaire   +6 more sources

Radiative transfer on hierarchial grids [PDF]

open access: yesAstronomy & Astrophysics, 2012
Accepted to A&A; 13 pages, 8 figures; (v2: minor typos corrected)
Juvela M., Lunttila T.
openaire   +3 more sources

Analysis of the Discrete Theory of Radiative Transfer in the Coupled “Ocean–Atmosphere” System: Current Status, Problems and Development Prospects

open access: yesJournal of Marine Science and Engineering, 2020
In this paper, we analyze the current state of the discrete theory of radiative transfer. One-dimensional, three-dimensional and stochastic radiative transfer models are considered.
Viktor P. Afanas’ev   +4 more
doaj   +1 more source

Three‐Dimensional Radiative Effects By Shallow Cumulus Clouds on Dynamic Heterogeneities Over a Vegetated Surface

open access: yesJournal of Advances in Modeling Earth Systems, 2020
One‐dimensional radiative transfer solvers are computationally much more efficient than full three‐dimensional radiative transfer solvers but do not account for the horizontal propagation of radiation and thus produce unrealistic surface irradiance ...
M. A. Veerman   +4 more
doaj   +1 more source

The Geometry of Radiative Transfer [PDF]

open access: yes, 2015
We present the geometry and symmetries of radiative transfer theory. Our geometrization exploits recent work in the literature that enables to obtain the Hamiltonian formulation of radiative transfer as the semiclassical limit of a phase space representation of electromagnetic theory.
Christian Lessig, Alex Castro
openaire   +3 more sources

Neighboring Column Approximation—An Improved 3D Thermal Radiative Transfer Approximation for Non‐Rectangular Grids

open access: yesJournal of Advances in Modeling Earth Systems, 2020
We present a significantly improved version of the Neighboring Column Approximation (NCA 2.0), a fast 3D approximation for the calculation of thermal heating and cooling rates in cloudy atmospheres for large eddy simulation models.
Carolin Klinger, Bernhard Mayer
doaj   +1 more source

Radiative transfer and flux theory [PDF]

open access: yesMathematics and Mechanics of Solids, 2014
The fundamental phenomenological equations of radiative transfer, e.g., Lambert’s cosine rule and the radiant transport equation, are derived from an analysis based on the Cauchy flux theory of continuum mechanics. For the classical case, where the radiance is distributed regularly over the unit sphere, it is shown that Lambert’s rule follows from a ...
Reuven Segev, Joe D. Goddard
openaire   +3 more sources

Proximity Effects in Radiative Transfer [PDF]

open access: yes, 2010
Though the dependence of near-field radiative transfer on the gap between two planar objects is well understood, that between curved objects is still unclear. We show, based on the analysis of the surface polariton mediated radiative transfer between two
Arvind Narayanaswamy   +6 more
core   +3 more sources

A Refined Four-Stream Radiative Transfer Model for Row-Planted Crops

open access: yesRemote Sensing, 2020
In modeling the canopy reflectance of row-planted crops, neglecting horizontal radiative transfer may lead to an inaccurate representation of vegetation energy balance and further cause uncertainty in the simulation of canopy reflectance at larger ...
Xu Ma, Tiejun Wang, Lei Lu
doaj   +1 more source

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