Extinction Properties of Some Complex Dust Grains

Research output: Contribution to journal › Conference article › Research › peer-review

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Extinction Properties of Some Complex Dust Grains. / Andersen, A. C.; Sotelo, J. A.; Niklasson, G. A.; Pustovit, V. N.

In: ASP Conference Series, Vol. 309, 05.2004, p. 709–728.

Research output: Contribution to journal › Conference article › Research › peer-review

Harvard

Andersen, AC, Sotelo, JA, Niklasson, GA & Pustovit, VN 2004, 'Extinction Properties of Some Complex Dust Grains', ASP Conference Series, vol. 309, pp. 709–728. <https://arxiv.org/pdf/astro-ph/0310343.pdf>

APA

Andersen, A. C., Sotelo, J. A., Niklasson, G. A., & Pustovit, V. N. (2004). Extinction Properties of Some Complex Dust Grains. ASP Conference Series, 309, 709–728. https://arxiv.org/pdf/astro-ph/0310343.pdf

Vancouver

Andersen AC, Sotelo JA, Niklasson GA, Pustovit VN. Extinction Properties of Some Complex Dust Grains. ASP Conference Series. 2004 May;309:709–728.

Author

Andersen, A. C. ; Sotelo, J. A. ; Niklasson, G. A. ; Pustovit, V. N. / Extinction Properties of Some Complex Dust Grains. In: ASP Conference Series. 2004 ; Vol. 309. pp. 709–728.

Bibtex

@inproceedings{f94600f013994a0cbd2584feaf499f10,
title = "Extinction Properties of Some Complex Dust Grains",
abstract = "Dust particles in space may appear as clusters of individual grains. The morphology of these clusters could be of a fractal or more compact nature. To investigate how the cluster morphology influences the calculated extinction of different clusters in the wavelength range 0.1 - 100 μm, we have preformed extinction calculations of three-dimensional clusters consisting of identical touching spherical particles arranged in three different geometries: prefractal, simple cubic and face-centered cubic. In our calculations we find that the extinction coefficients of prefractal and compact clusters are of the same order of magnitude. For the calculations, we have performed an in-depth comparison of the theoretical predictions of extinction coefficients of multi-sphere clusters derived by rigorous solutions, on the one hand, and popular discrete-dipole approximations, on the other. This comparison is essential if one is to assess the degree of reliability of model calculations made with the discrete-dipole approximations, which appear in the literature quite frequently without an adequate accounting of their validity.",
author = "Andersen, {A. C.} and Sotelo, {J. A.} and Niklasson, {G. A.} and Pustovit, {V. N.}",
year = "2004",
month = may,
language = "English",
volume = "309",
pages = "709–728",
journal = "ASP Conference Series",
publisher = "Astrnomical Society of the Pacific",

}

RIS

TY - GEN

T1 - Extinction Properties of Some Complex Dust Grains

AU - Andersen, A. C.

AU - Sotelo, J. A.

AU - Niklasson, G. A.

AU - Pustovit, V. N.

PY - 2004/5

Y1 - 2004/5

N2 - Dust particles in space may appear as clusters of individual grains. The morphology of these clusters could be of a fractal or more compact nature. To investigate how the cluster morphology influences the calculated extinction of different clusters in the wavelength range 0.1 - 100 μm, we have preformed extinction calculations of three-dimensional clusters consisting of identical touching spherical particles arranged in three different geometries: prefractal, simple cubic and face-centered cubic. In our calculations we find that the extinction coefficients of prefractal and compact clusters are of the same order of magnitude. For the calculations, we have performed an in-depth comparison of the theoretical predictions of extinction coefficients of multi-sphere clusters derived by rigorous solutions, on the one hand, and popular discrete-dipole approximations, on the other. This comparison is essential if one is to assess the degree of reliability of model calculations made with the discrete-dipole approximations, which appear in the literature quite frequently without an adequate accounting of their validity.

AB - Dust particles in space may appear as clusters of individual grains. The morphology of these clusters could be of a fractal or more compact nature. To investigate how the cluster morphology influences the calculated extinction of different clusters in the wavelength range 0.1 - 100 μm, we have preformed extinction calculations of three-dimensional clusters consisting of identical touching spherical particles arranged in three different geometries: prefractal, simple cubic and face-centered cubic. In our calculations we find that the extinction coefficients of prefractal and compact clusters are of the same order of magnitude. For the calculations, we have performed an in-depth comparison of the theoretical predictions of extinction coefficients of multi-sphere clusters derived by rigorous solutions, on the one hand, and popular discrete-dipole approximations, on the other. This comparison is essential if one is to assess the degree of reliability of model calculations made with the discrete-dipole approximations, which appear in the literature quite frequently without an adequate accounting of their validity.

M3 - Conference article

VL - 309

SP - 709

EP - 728

JO - ASP Conference Series

JF - ASP Conference Series

ER -

ID: 346007653