Observational constraints on the dynamics of the interplanetary magnetic field dissipation range
- R. Leamon, Charles W. Smith, N. Ness, W. Matthaeus, H. Wong
- Physics
- 1 March 1998
The dissipation range for interplanetary magnetic field fluctuations is formed by those fluctuations with spatial scales comparable to the gyroradius or ion inertial length of a thermal ion. It is…
Proton and Electron Mean Free Paths: The Palmer Consensus Revisited
- J. Bieber, W. Matthaeus, Charles W. Smith, W. Wanner, M. Kallenrode, G. Wibberenz
- Physics
- 1994
We present experimental and theoretical evidence suggesting that the mean free path of cosmic-ray electrons and protons may be fundamentally different at low to intermediate (less than 50 MV)…
Dominant two‐dimensional solar wind turbulence with implications for cosmic ray transport
- J. Bieber, W. Wanner, W. Matthaeus
- Physics
- 1 February 1996
Two new methods for distinguishing two-dimensional (2D) turbulence from slab turbulence are applied to Helios magnetometer data. Two-component models with varying slab and 2D ingredients are…
Measurement of the rugged invariants of magnetohydrodynamic turbulence in the solar wind
- W. Matthaeus, M. Goldstein
- Physics
- 1 August 1982
Measurements of the total energy, cross helicity, and magnetic helicity of the solar wind at 1, 2.8, and 5 AU are presented. These quantities are the three rugged invariants of three-dimensional…
Nonlinear Collisionless Perpendicular Diffusion of Charged Particles
- W. Matthaeus, G. Qin, J. Bieber, G. Zank
- Physics
- 15 May 2003
A nonlinear theory of the perpendicular diffusion of charged particles is presented, including the influence of parallel scattering and dynamical turbulence. The theory shows encouraging agreement…
Anisotropy in MHD turbulence due to a mean magnetic field
- J. Shebalin, W. Matthaeus, D. Montgomery
- Physics, GeologyJournal of Plasma Physics
- 1 June 1983
The development of anisotropy in an initially isotropie spectrum is studied numerically for two-dimensional magnetohydrodynamic turbulence. The anisotropy develops through the combined effects of an…
Origin and evolution of fluctuations in the solar wind: Helios observations and Helios-Voyager comparisons
- D. Roberts, M. Goldstein, L. Klein, W. Matthaeus
- Physics, Geology
- 1 November 1987
Using hour-averaged data from the Helios and Voyager spacecraft, we have investigated the origin and evolution of low-frequency interplanetary fluctuations from 0.3 to 20 AU. Alfvenic fluctuations in…
Evidence for the presence of quasi‐two‐dimensional nearly incompressible fluctuations in the solar wind
- W. Matthaeus, M. Goldstein, D. Roberts
- Physics
- 1 December 1990
Solar wind fluctuations are commonly regarded as a superposition of MHD waves primarily in the Alven mode. These MHD fluctuations are frequently assumed to possess slab or isotropic symmetry,…
EMPIRICAL CONSTRAINTS ON PROTON AND ELECTRON HEATING IN THE FAST SOLAR WIND
- S. Cranmer, W. Matthaeus, B. Breech, J. Kasper
- Physics
- 15 July 2009
We analyze measured proton and electron temperatures in the high-speed solar wind in order to calculate the separate rates of heat deposition for protons and electrons. When comparing with other…
MHD-driven Kinetic Dissipation in the Solar Wind and Corona
- R. Leamon, W. Matthaeus, C. Smith, G. Zank, D. Mullan, S. Oughton
- Physics
- 10 July 2000
Mechanisms for the deposition of heat in the lower coronal plasma are discussed, emphasizing recent attempts to reconcile the fluid and kinetic perspectives. Structures at magnetohydrodynamic (MHD)…
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