Publication Abstracts

Mishchenko 1991

Mishchenko, M.I., 1991: Extinction and polarization of transmitted light by partially aligned nonspherical grains. Astrophys. J., 367, 561-574, doi:10.1086/169652.

The problem of model theoretical calculation of the interstellar extinction and polarization due to nonspherical grains partially aligned in a magnetic field is considered. The Waterman's T-matrix approach is used to develop a rigorous analytical method to average the extinction matrix over orientations of a nonspherical grain. The method results in minimizing the numerical effort and can be used for efficient numerical caluclations in the resonance region of grain size parameters.

Numerical aspects of the proposed method are discussed in detail. The range of validity of the Rayleigh approximation in calculating the extinction matrix for partially aligned spheroidal grains is examined, i.e., the values of the equal-volume-sphere size parameter are determined below which the Rayleigh-limit formulae are accurate within a given error.

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BibTeX Citation

@article{mi07400c,
  author={Mishchenko, M. I.},
  title={Extinction and polarization of transmitted light by partially aligned nonspherical grains},
  year={1991},
  journal={Astrophys. J.},
  volume={367},
  pages={561--574},
  doi={10.1086/169652},
}

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RIS Citation

TY  - JOUR
ID  - mi07400c
AU  - Mishchenko, M. I.
PY  - 1991
TI  - Extinction and polarization of transmitted light by partially aligned nonspherical grains
JA  - Astrophys. J.
VL  - 367
SP  - 561
EP  - 574
DO  - 10.1086/169652
ER  -

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