Další formáty:
BibTeX
LaTeX
RIS
@article{29895, author = {Cremaschini, Claudio and Stuchlík, Zdeněk}, article_number = {2}, doi = {http://dx.doi.org/10.1142/S0218271817500018}, keywords = {relativistic kinetic theory; collosionless neutral matter; Carter constant; Killing tensors; nonisotropic equilibria}, language = {eng}, issn = {0218-2718}, journal = {International Journal of Modern Physics D}, title = {Carter constant induced mechanism for generation of anisotropic kinetic equilibria in collisionless N-body systems}, url = {https://www.worldscientific.com/doi/abs/10.1142/S0218271817500018}, volume = {26}, year = {2017} }
TY - JOUR ID - 29895 AU - Cremaschini, Claudio - Stuchlík, Zdeněk PY - 2017 TI - Carter constant induced mechanism for generation of anisotropic kinetic equilibria in collisionless N-body systems JF - International Journal of Modern Physics D VL - 26 IS - 2 SP - „1750001-1“-„1750001-23“ EP - „1750001-1“-„1750001-23“ SN - 02182718 KW - relativistic kinetic theory KW - collosionless neutral matter KW - Carter constant KW - Killing tensors KW - nonisotropic equilibria UR - https://www.worldscientific.com/doi/abs/10.1142/S0218271817500018 L2 - https://www.worldscientific.com/doi/abs/10.1142/S0218271817500018 N2 - A new intrinsically-relativistic kinetic mechanism for generation of nonisotropic relativistic kinetic equilibria in collisionless N-body systems is pointed out. The theory is developed in the framework of the covariant Vlasov statistical description. The new effect is based on the constraints placed by the conservation laws of neutral single-particle dynamics in prescribed background curved-spacetimes demonstrating existence of Killing tensors. As an illustration, the particular case of the Kerr spacetime admitting the so-called Carter constant for the particle geodesic motion is considered. The general functional form of the equilibrium kinetic distribution function (KDF) is determined and an explicit realization in terms of Gaussian-like distributions is provided. It is shown that, due to the Carter constant, these equilibrium KDFs exhibit an anisotropic phase-space functional dependence in terms of the single-particle 4-velocity components, giving rise to corresponding nonisotropic continuum fluid fields. The qualitative properties of the equilibrium stress-energy tensor associated with these systems are discussed, with a particular emphasis on the related occurrence of temperature anisotropy effects. The theory is susceptible of astrophysical applications, including in particular the statistical properties of dark matter (DM) halos around stellar-mass or galactic-center black holes. ER -
CREMASCHINI, Claudio a Zdeněk STUCHLÍK. Carter constant induced mechanism for generation of anisotropic kinetic equilibria in collisionless N-body systems. \textit{International Journal of Modern Physics D}. 2017, roč.~26, č.~2, s.~„1750001-1“-„1750001-23“, 23 s. ISSN~0218-2718. Dostupné z: https://dx.doi.org/10.1142/S0218271817500018.
|