KINETIC THEORY FOR GRAVITATING SYSTEMS OF COLLISIONLESS NEUTRAL MATTER

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F13%3A%230004775" target="_blank" >RIV/47813059:19240/13:#0004775 - isvavai.cz</a>

Result on the web

<a href="http://www.worldscientific.com/doi/abs/10.1142/S0218271813500776" target="_blank" >http://www.worldscientific.com/doi/abs/10.1142/S0218271813500776</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S0218271813500776" target="_blank" >10.1142/S0218271813500776</a>

Result language

angličtina

Original language name

KINETIC THEORY FOR GRAVITATING SYSTEMS OF COLLISIONLESS NEUTRAL MATTER

Original language description

The study of the statistical properties of collisionless systems formed by neutral particles subject to gravitational field represents an intriguing theoretical issue. In astrophysics, it directly relates to the description of collisionless gravitating dark matter (DM) halos. Structures of this type are expected to be characterized by intrinsically non-Maxwellian kinetic distribution functions (KDFs) and to exhibit temperature anisotropy, i.e. an anisotropy in the directional particle velocity dispersions. In this paper, a theoretical analysis of the issue is proposed, based on the kinetic theory developed in the framework of the Vlasov-Poisson description for nonrelativistic DM systems at equilibrium. By implementing the method of invariants, explicitsolutions for the equilibrium KDFs are constructed and expressed through generalized Gaussian distributions. A perturbative theory is developed which allows them to be cast in terms of Chapman-Enskog series representations and to evaluat

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

INTERNATIONAL JOURNAL OF MODERN PHYSICS D

ISSN

0218-2718

e-ISSN

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Volume of the periodical

22

Issue of the periodical within the volume

13

Country of publishing house

SG - SINGAPORE

Number of pages

24

Pages from-to

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UT code for WoS article

000326718400008

EID of the result in the Scopus database

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