The role of pressure anisotropy in the turbulent intracluster medium
In low-density plasma environments, such as the intracluster medium (ICM), the Larmour frequency is much larger than the ion-ion collision frequency. In such a case, the thermal pressure becomes anisotropic with respect to the magnetic field orientation and the evolution of the turbulent gas is more...
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2012
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v370_n1_p_Nakwacki http://hdl.handle.net/20.500.12110/paper_17426588_v370_n1_p_Nakwacki |
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paper:paper_17426588_v370_n1_p_Nakwacki2023-06-08T16:27:21Z The role of pressure anisotropy in the turbulent intracluster medium Anisotropy Collisionless plasmas Computer hardware description languages Magnetohydrodynamics Fluid-like behavior Intra-cluster medium Ion-ion collision frequency Low-density plasmas Magnetic field orientations Magnetic fluctuation Perpendicular-plane Pressure anisotropy Magnetoplasma In low-density plasma environments, such as the intracluster medium (ICM), the Larmour frequency is much larger than the ion-ion collision frequency. In such a case, the thermal pressure becomes anisotropic with respect to the magnetic field orientation and the evolution of the turbulent gas is more correctly described by a kinetic approach. A possible description of these collisionless scenarios is given by the so-called kinetic magnetohydrodynamic (KMHD) formalism, in which particles freely stream along the field lines, while moving with the field lines in the perpendicular direction. In this way a fluid-like behavior in the perpendicular plane is restored. In this work, we study fast growing magnetic fluctuations in the smallest scales which operate in the collisionless plasma that fills the ICM. In particular, we focus on the impact of a particular evolution of the pressure anisotropy and its implications for the turbulent dynamics of observables under the conditions prevailing in the ICM. We present results from numerical simulations and compare the results which those obtained using an MHD formalism. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v370_n1_p_Nakwacki http://hdl.handle.net/20.500.12110/paper_17426588_v370_n1_p_Nakwacki |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Anisotropy Collisionless plasmas Computer hardware description languages Magnetohydrodynamics Fluid-like behavior Intra-cluster medium Ion-ion collision frequency Low-density plasmas Magnetic field orientations Magnetic fluctuation Perpendicular-plane Pressure anisotropy Magnetoplasma |
spellingShingle |
Anisotropy Collisionless plasmas Computer hardware description languages Magnetohydrodynamics Fluid-like behavior Intra-cluster medium Ion-ion collision frequency Low-density plasmas Magnetic field orientations Magnetic fluctuation Perpendicular-plane Pressure anisotropy Magnetoplasma The role of pressure anisotropy in the turbulent intracluster medium |
topic_facet |
Anisotropy Collisionless plasmas Computer hardware description languages Magnetohydrodynamics Fluid-like behavior Intra-cluster medium Ion-ion collision frequency Low-density plasmas Magnetic field orientations Magnetic fluctuation Perpendicular-plane Pressure anisotropy Magnetoplasma |
description |
In low-density plasma environments, such as the intracluster medium (ICM), the Larmour frequency is much larger than the ion-ion collision frequency. In such a case, the thermal pressure becomes anisotropic with respect to the magnetic field orientation and the evolution of the turbulent gas is more correctly described by a kinetic approach. A possible description of these collisionless scenarios is given by the so-called kinetic magnetohydrodynamic (KMHD) formalism, in which particles freely stream along the field lines, while moving with the field lines in the perpendicular direction. In this way a fluid-like behavior in the perpendicular plane is restored. In this work, we study fast growing magnetic fluctuations in the smallest scales which operate in the collisionless plasma that fills the ICM. In particular, we focus on the impact of a particular evolution of the pressure anisotropy and its implications for the turbulent dynamics of observables under the conditions prevailing in the ICM. We present results from numerical simulations and compare the results which those obtained using an MHD formalism. |
title |
The role of pressure anisotropy in the turbulent intracluster medium |
title_short |
The role of pressure anisotropy in the turbulent intracluster medium |
title_full |
The role of pressure anisotropy in the turbulent intracluster medium |
title_fullStr |
The role of pressure anisotropy in the turbulent intracluster medium |
title_full_unstemmed |
The role of pressure anisotropy in the turbulent intracluster medium |
title_sort |
role of pressure anisotropy in the turbulent intracluster medium |
publishDate |
2012 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v370_n1_p_Nakwacki http://hdl.handle.net/20.500.12110/paper_17426588_v370_n1_p_Nakwacki |
_version_ |
1768545620879998976 |