HR: 15:10h
AN: SH33B-07    [Abstracts]
TI: Turbulence and Plasma Heating in the Solar Wind
AU: * Howes, G G
EM: ghowes@astro.berkeley.edu
AF: Dept. of Astronomy; UC Berkeley, 601 Campbell Hall, Berkeley, CA 94720, United States
AU: Cowley, S C
EM: cowley@physics.ucla.edu
AF: Dept. of Physics and Astronomy, UCLA, 4-909 PAB, Los Angeles, CA 90095, United States
AU: Dorland, W
EM: bdorland@umd.edu
AF: Dept. Physics & CSCAMM; Univ. Maryland, 4123 CSIC Bldg, College Park, MD 20742, United States
AU: Quataert, E
EM: eliot@astro.berkeley.edu
AF: Dept. of Astronomy; UC Berkeley, 601 Campbell Hall, Berkeley, CA 94720, United States
AU: Schekochihin, A A
EM: a.schekochihin@imperial.ac.uk
AF: Dept. Physics; Imperial College, Blackett Laboratory Prince Consort Road, London, CA SW7 2BW, United Kingdom
AB: Measurements of the solar wind plasma in the inner heliosphere show non-adiabatic temperature profiles for the plasma species, suggesting in situ heating of the solar wind. Heating of the plasma via the dissipation of a turbulent cascade is considered a promising explanation; phase space instabilities may also play an important role in constraining the temperature anisotropies of each species as the solar wind expands radially. I will present the results of nonlinear, kinetic simulations of the plasma turbulence aimed at determining directly the heating of each species. In addition, an analytical model of the plasma heating in the inner heliosphere is used to identify the influence of temperature anisotropy instabilities and to constrain the required heating by the plasma turbulence. This work is supported by the DOE Center for Multi-scale Plasma Dynamics, Fusion Science Center Cooperative Agreement ER54785.
DE: 2149 MHD waves and turbulence (2752, 6050, 7836)
DE: 2159 Plasma waves and turbulence
DE: 2164 Solar wind plasma
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Fall Meeting