Results 11 to 20 of about 285,492 (338)

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.
Knop, S., Hauschildt, P. H., Baron, E.
openaire   +5 more sources

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

Radiative transfer with reciprocal transactions: Numerical method and its implementation. [PDF]

open access: yesPLoS ONE, 2019
We present a numerical method for solving electromagnetic scattering by dense discrete random media entitled radiative transfer with reciprocal transactions (R2T2). The R2T2 is a combination of the Monte Carlo radiative-transfer, coherent-backscattering,
Timo Väisänen   +3 more
doaj   +2 more sources

Radiative Transfer and Generalized Wind [PDF]

open access: yesEntropy, 2020
Dissimilar flows can be compared by exploiting the fact that all flux densities divided by their conjugate volume densities form velocity fields, which have been described as generalized winds. These winds are an extension of the classical notion of wind
Christopher Essex, Indrani Das
doaj   +2 more sources

Second Law Analysis of Spectral Radiative Transfer and Calculation in One-Dimensional Furnace Cases [PDF]

open access: yesEntropy, 2019
This study combines the radiation transfer process with the thermodynamic second law to achieve more accurate results for the energy quality and its variability in the spectral radiation transfer process. First, the core ideas of the monochromatic photon
Shiquan Shan, Zhijun Zhou
doaj   +2 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

Light scattering and absorption properties of dust particles retrieved from satellite measurements [PDF]

open access: yes, 2008
We use the radiative transfer model and chemistry transport model to improve our retrievals of dust optical properties from satellite measurements. The optical depth and absorbing optical depth of mineral dust can be obtained from our improved retrieval ...
Hu, R-M., Sokhi, R.S.
core   +1 more source

Optical depth in polarised Monte Carlo radiative transfer [PDF]

open access: yes, 2019
Context: The Monte Carlo method is the most widely used method to solve radiative transfer problems in astronomy, especially in a fully general 3D geometry. A crucial concept in any Monte Carlo radiative transfer code is the random generation of the next
Baes, Maarten   +3 more
core   +3 more sources

Radiative heat transfer exceeding the blackbody limit between macroscale planar surfaces separated by a nanosize vacuum gap

open access: yesNature Communications, 2016
Evanescent coupling between surfaces separated by a distance smaller than the thermal wavelength can lead to radiative heat transfer greater than the blackbody limit.
Michael P. Bernardi   +2 more
doaj   +1 more source

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