Results 1 to 10 of about 393 (54)

Evidence of Critical Balance in Kinetic Alfven Wave Turbulence Simulations

, 2011
A numerical simulation of kinetic plasma turbulence is performed to assess the applicability of critical balance to kinetic, dissipation scale turbulence. The analysis is performed in the frequency domain to obviate complications inherent in performing a
G. G. Howes, Iroshnikov R. S., J. M. TenBarge   +2 more
core   +1 more source

Energy transfer, pressure tensor and heating of kinetic plasma

, 2017
Kinetic plasma turbulence cascade spans multiple scales ranging from macroscopic fluid flow to sub-electron scales. Mechanisms that dissipate large scale energy, terminate the inertial range cascade and convert kinetic energy into heat are hotly debated.
Chen, S., Daughton, W., Haggerty, C. C., Matthaeus, W. H., Parashar, T. N., Roytershteyn, V., Shi, Y., Wan, M., Yang, Y.   +8 more
core   +1 more source

Beyond Gibbs-Boltzmann-Shannon: General Entropies -- The Gibbs-Lorentzian Example

, 2014
We propose a generalisation of Gibbs' statistical mechanics into the domain of non-negligible phase space correlations. Derived are the probability distribution and entropy as a generalised ensemble average, replacing Gibbs-Boltzmann-Shannon's entropy ...
Baumjohann, W., Treumann, R. A.
core   +2 more sources

Transition from ion-coupled to electron-only reconnection: Basic physics and implications for plasma turbulence

, 2019
Using kinetic particle-in-cell (PIC) simulations, we simulate reconnection conditions appropriate for the magnetosheath and solar wind, i.e., plasma beta (ratio of gas pressure to magnetic pressure) greater than 1 and low magnetic shear (strong guide ...
A. Chasapis, Bieber J. W., Birn J., C. C. Haggerty, Dorelli J. C., Eriksson E., Haggerty C. C., J. F. Drake, J. M. TenBarge, K. G. Klein, Karimabadi H., M. A. Shay, M. Swisdak, Mandt M. E., Matthaeus W. H., P. A. Cassak, P. Sharma Pyakurel, Phan T. D., Phan T. D., Priest E. R., Pritchett P. L., Pyakurel P. S., Shay M. A., Shay M. A., Shay M. A., Shay M. A., Shay M. A., Sonnerup B. U. Ö., Swisdak M., T. D. Phan, T. N. Parashar, Terasawa T., Vörös Z., W. H. Matthaeus, Yordanova E., Zeiler A., Øieroset M.   +36 more
core   +1 more source

Electromagnetic cyclotron instabilities in bi-Kappa distributed plasmas : a quasilinear approach [PDF]

, 2017
Anisotropic bi-Kappa distributed plasmas, as encountered in the solar wind and planetary magnetospheres,are susceptible to a variety of kinetic instabilities including the cyclotron instabilities driven by an excess ofperpendicular temperature T⊥ > T ...
B. Eliasson, Lazar M., M. Lazar, P. H. Yoon, Sagdeev R. Z., Trakhtengerts V. Y.   +5 more
core   +1 more source

Chameleon effect and the Pioneer anomaly

, 2012
The possibility that the apparent anomalous acceleration of the Pioneer 10 and 11 spacecraft may be due, at least in part, to a chameleon field effect is examined.
J. R. Morris, John D. Anderson, S. G. Turyshev   +2 more
core   +1 more source

Constraining the Nordtvedt parameter with the BepiColombo Radioscience experiment [PDF]

, 2016
BepiColombo is a joint ESA/JAXA mission to Mercury with challenging objectives regarding geophysics, geodesy and fundamental physics. The Mercury Orbiter Radioscience Experiment (MORE) is one of the on-board experiments, including three different but ...
De Marchi, Fabrizio, Milani, Andrea, Schettino, Giulia, Tommei, Giacomo   +3 more
core   +2 more sources

Entropic Gravity, Phase-Space Noncommutativity and the Equivalence Principle

, 2011
We generalize E. Verlinde's entropic gravity reasoning to a phase-space noncommutativity set-up. This allow us to impose a bound on the product of the noncommutative parameters based on the Equivalence Principle.
Bastos C, Bastos C Bertolami O Dias N C Prata J N, Bertolami O, Catarina Bastos, Connes A, Francisco F Bertolami O Gil P J S Paramos J, Jahn J, João Nuno Prata, Kosinski P, Maldacena J, Nuno Costa Dias, Orfeu Bertolami, Padmananbhan T, Seiberg N, t'Hooft G, Verlinde E   +15 more
core   +1 more source

THE THREE-DIMENSIONAL EVOLUTION OF ION-SCALE CURRENT SHEETS: TEARING AND DRIFT-KINK INSTABILITIES IN THE PRESENCE OF PROTON TEMPERATURE ANISOTROPY [PDF]

, 2014
We present the first three-dimensional hybrid simulations of the evolution of ion-scale current sheets, with an investigation of the role of temperature anisotropy and associated kinetic instabilities on the growth of the tearing instability and particle
Bale S. D., Borovsky J. E., D. Burgess, Drake J. F., Gosling J. T., Haynes C. T., Hellinger P., Kunz M. W., L. Matteini, Matteini L., Osman K. T., Osman K. T., Osman K. T., P. W. Gingell, Riquelme M. A., Schekochihin A. A., Servidio S., Servidio S., Sharma P., Swisdak M., Wicks R. T., Yin L., Zhdankin V.   +22 more
core   +2 more sources

Energy conversion in turbulent weakly-collisional plasmas: Eulerian Hybrid Vlasov-Maxwell simulations

, 2019
Kinetic simulations based on the Eulerian Hybrid Vlasov-Maxwell (HVM) formalism permit the examination of plasma turbulence with useful resolution of the proton velocity distribution function (VDF).
Chasapis, A., Matthaeus, W. H., Pezzi, O., Servidio, S., Valentini, F., Veltri, P., Yang, Y.   +6 more
core   +1 more source