Results 41 to 50 of about 124,778 (295)

Composite biasing in Monte Carlo radiative transfer [PDF]

open access: yes, 2016
Biasing or importance sampling is a powerful technique in Monte Carlo radiative transfer, and can be applied in different forms to increase the accuracy and efficiency of simulations.
Baes, Maarten   +6 more
core   +3 more sources

Radiative Transfer Modeling of Simulation and Observational Data [PDF]

open access: yesProceedings of the International Astronomical Union, 2010
AbstractRadiative Transfer (RT) is considered to be one of the four Grand Challenges in Computational Astrophysics aside of Astrophysical Fluid Dynamics, N-Body Problems in Astrophysics, and Relativistic Astrophysics. The high dimensionality (7D instead of 4D for MHD) and the underlying integro-differential transport equation have forced coders to ...
Jürgen Steinacker   +2 more
openaire   +1 more source

A 3D radiative transfer framework IX. Time dependence

open access: yes, 2012
Context. Time-dependent, 3D radiation transfer calculations are important for the modeling of a variety of objects, from supernovae and novae to simulations of stellar variability and activity.
Baron, E., Hauschildt, P. H., Jack, D.
core   +1 more source

Multidimensional simulations of radiative transfer in Type Ia supernovae [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
11 pages, 8 figure. Accepted for publication by MNRAS.
openaire   +4 more sources

Prediction of the 21-cm signal from reionization: comparison between 3D and 1D radiative transfer schemes

open access: yes, 2017
Three-dimensional radiative transfer simulations of the epoch of reionization can produce realistic results, but are computationally expensive. On the other hand, simulations relying on one-dimensional radiative transfer solutions are faster but limited ...
Choudhury, T. Roy   +5 more
core   +1 more source

Enhanced Cloud Top Longwave Radiative Cooling Due To the Effect of Horizontal Radiative Transfer in the Stratocumulus to Trade Cumulus Transition Regime

open access: yesGeophysical Research Letters, 2023
Recent studies develop the SPeedy Algorithm for Radiative TrAnsfer through CloUd Sides (SPARTACUS) to handle the influence of horizontal RT on vertical radiative fluxes within an atmospheric column.
Tong Ren   +4 more
doaj   +1 more source

Radiation-hydrodynamics Effects in an Inhomogeneous Medium

open access: yesThe Astrophysical Journal
Radiation flow through an inhomogeneous medium is critical in a wide range of physics and astronomy applications, from transport across cloud layers on the Earth to the propagation of supernova blast waves producing ultraviolet and X-ray emission ...
Christopher L. Fryer   +11 more
doaj   +1 more source

Radiative Transfer in 3D Numerical Simulations

open access: yes, 2002
Proceedings Workshop on Stellar Atmosphere Modeling, April ...
Stein, Robert F., Nordlund, Å.
openaire   +2 more sources

ARTS, the atmospheric radiative transfer simulator, version 2 [PDF]

open access: yesJournal of Quantitative Spectroscopy and Radiative Transfer, 2011
The second version of the atmospheric radiative transfer simulator, ARTS, is introduced. This is a general software package for long wavelength radiative transfer simulations, with a focus on passive microwave observations. The core part provides a workspace environment, in line with script languages.
P. Eriksson   +4 more
openaire   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende   +26 more
wiley   +1 more source

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