KINETIC THEORY FOR GRAVITATING SYSTEMS OF COLLISIONLESS NEUTRAL MATTER

@article{45521,
   author = {Cremaschini, Claudio and Stuchlík, Zdeněk},
   article_location = {SG - Singapurská republika},
   article_number = {13},
   doi = {http://dx.doi.org/10.1142/S0218271813500776},
   keywords = {Kinetic theory; Equilibrium distribution function; Collisionless neutral matter; Temperature anisotropy; Dark matter},
   language = {eng},
   issn = {0218-2718},
   journal = {International Journal of Modern Physics D},
   title = {KINETIC THEORY FOR GRAVITATING SYSTEMS OF COLLISIONLESS NEUTRAL MATTER},
   url = {https://www.worldscientific.com/doi/abs/10.1142/S0218271813500776},
   volume = {22},
   year = {2013}
}

TY  - JOUR
ID  - 45521
AU  - Cremaschini, Claudio - Stuchlík, Zdeněk
PY  - 2013
TI  - KINETIC THEORY FOR GRAVITATING SYSTEMS OF COLLISIONLESS NEUTRAL MATTER
JF  - International Journal of Modern Physics D
VL  - 22
IS  - 13
SN  - 02182718
KW  - Kinetic theory
KW  - Equilibrium distribution function
KW  - Collisionless neutral matter
KW  - Temperature anisotropy
KW  - Dark matter
UR  - https://www.worldscientific.com/doi/abs/10.1142/S0218271813500776
N2  - 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
ER  - 

CREMASCHINI, Claudio and Zdeněk STUCHLÍK. KINETIC THEORY FOR GRAVITATING SYSTEMS OF COLLISIONLESS NEUTRAL MATTER. \textit{International Journal of Modern Physics D}. SG - Singapurská republika, 2013, vol.~22, No~13, 24 pp. ISSN~0218-2718. Available from: https://dx.doi.org/10.1142/S0218271813500776.