Energy fluctuations of interstellar dust grains

Details Energy fluctuations of interstellar dust grains Energy fluctuations of interstellar dust grains

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....43...17g&link_type=abstract

Astronomy and Astrophysics, vol. 43, no. 1, Sept. 1975, p. 17-27. Research sponsored by the Deutsche Forschungsgemeinschaft.

Mathematics

Probability

7

Cosmic Dust, Energy Distribution, Granular Materials, Interstellar Matter, Black Body Radiation, Electromagnetic Absorption, Interstellar Radiation, Molecular Physics, Particle Emission, Probability Distribution Functions, Radiation Absorption, Thermal Energy, Time Dependence

Scientific paper

The fluctuations of internal temperatures of interstellar dust grains caused by the absorption of photons from the interstellar radiation field and collisions with the hot component of the interstellar gas are treated by means of a probability distribution function. A method is presented to compute this probability for a given heating mechanism and a given model for the dust grains. The resulting integral equation is discussed for the idealized case of particles emitting and absorbing radiation like gray bodies. Numerical results are given for a monochromatic and a black-body radiation field.

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