Astrophysics (Index)About

radiative transfer

(RT)
(energy transfer in the form of electromagnetic radiation)

Radiative transfer is the transfer of energy via electromagnetic radiation (EMR) through a gas or plasma, in particular, for a gas not so transparent that EMR merely misses all impediments. For such a less-than-transparent gas, absorption, emission, and scattering by the constituent particles (e.g., atoms) are basic to the process. The quantity radiance, the rate of energy flowing at a given time through a given area at a given location, characterizes the amount of radiative transfer. Spectral radiance is the radiance at a given wavelength. A equation of radiative transfer (RTE) describes this process, relating the transmission of energy to quantities that characterize the likelihood of absorption, emission, and scattering.


(physics,EMR)
Further reading:
http://en.wikipedia.org/wiki/Radiative_transfer
http://en.wikipedia.org/wiki/Radiance

Referenced by pages:
absorption
atmospheric model
beam
code
Compton scattering
computational astrophysics
convection zone
cooling function
cross section
DISORT
emission
energy density
giant star
Hyperion
kappa mechanism (κ-mechanism)
mean free path
radiation zone
random walk
radiation hydrodynamics (RHD)
radiative transfer code (RT code)
equation of radiative transfer (RTE)
radiative transfer model (RTM)
scattering
self-absorption
Sobolev approximation
stellar structure
synchrotron radiation
thermodynamic equilibrium (TE)
Thomson scattering
Turtlebeach
two-stream approximation
white dwarf (WD)

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