Results 11 to 20 of about 272,791 (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.
Peter H. Hauschildt   +3 more
openaire   +6 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   +5 more sources

Radiative transfer dynamo effect

open access: yesPhysical Review E, 2017
6 pages, 4 figures, published in Physical Review ...
Nathaniel J. Fisch, Vadim R. Munirov
openaire   +6 more sources

Radiative Transfer in Stellar Atmospheres [PDF]

open access: yesEAS Publications Series, 2010
This review presents basic equations for the solution of the NLTE radiative transfer problem for trace elements and methods for its solution are summarized. The importance of frequency coupling in radiative transfer in stellar atmospheres is emphasized.
Kubat, Jiri
openaire   +5 more sources

Discontinuities in numerical radiative transfer [PDF]

open access: yesAstronomy & Astrophysics, 2019
Observations and magnetohydrodynamic simulations of solar and stellar atmospheres reveal an intermittent behavior or steep gradients in physical parameters, such as magnetic field, temperature, and bulk velocities. The numerical solution of the stationary radiative transfer equation is particularly challenging in such situations, because standard ...
Janett, Gioele
openaire   +5 more sources

Monte Carlo radiative transfer [PDF]

open access: yes, 2011
To appear in the Chandra Centennial issue of the Bulletin of the Astronomical Society of India, volume 39 (2011), eds D.J.
Alpert   +32 more
openaire   +5 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

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