PTYS/LPL Faculty

Kristopher Klein

Assistant Professor
Ph.D., 2013, University of Iowa

Kuiper 431

Years with LPL: 2017


Dr. Klein's research focuses on studying fundamental plasma phenomena that governs the dynamics of systems within our heliosphere as well as more distant astrophysical bodies. He has particular interest in identifying heating and energization mechanisms in turbulent plasmas, such as the Sun's extended atmosphere known as the solar wind, as well as evaluating the effects of the departure from local thermodynamic equilibrium on nearly collisionless plasmas which are ubiquitous in space environments.

These systems are studied with a combination of analytic theory and numerical simulation, including large-scale nonlinear turbulence codes such as AstroGK and HVM. These theoretical predictions are compared to in situ observations from spacecraft including NASA's Wind and MMS and the upcoming Parker Solar Probe mission. By comparing theory with local plasma measurements, we aim to answer a variety of questions about the behavior of plasma in our solar system.

Current Grants

•Solar Wind Electrons Alphas and Protons (SWEAP): NASA's Parker Solar Probe mission; member of Science, Theory, and Modeling Team

•Assessing the Relative Importance of Stochastic and Resonant Ion Heating the Solar Wind, NASA Heliophysics Supporting Research Program

•Non-Maxwellian Distribution Functions in the Solar Wind: Dispersion Relations and Instabilities, NASA Heliophysics Supporting Research Program

Current Spacecraft Involvement

Former Spacecraft Involvement

Complete publications list available from: NASA ADS Author search: Kristopher G. Klein

Refereed publications (NASA ADS): Calendar Year 2016 through July 2018

Wilson, L. B., III, Stevens, M. L., Kasper, J. C., Klein, K. G., Maruca, B. A., Bale, S. D., Bowen, T. A., Pulupa, M. P., Salem, C. S. The Statistical Properties of Solar Wind Temperature Parameters Near 1 au 2018ApJS..236...41W

Vech, D., Mallet, A., Klein, K. G., Kasper, J. C. Magnetic Reconnection May Control the Ion-scale Spectral Break of Solar Wind Turbulence 2018ApJ...855L..27V

Howes, G. G., McCubbin, A. J., Klein, K. G. Spatially localized particle energization by Landau damping in current sheets produced by strong Alfvén wave collisions 2018JPlPh..84a9005H

Vech, D., Klein, K. G., Kasper, J. C.  Nature of Stochastic Ion Heating in the Solar Wind: Testing the Dependence on Plasma Beta and Turbulence Amplitude 2017ApJ...850L..11V

Klein, K. G., Kasper, J. C., Korreck, K. E., Stevens, M. L.  Applying Nyquist's method for stability determination to solar wind observations 2017JGRA..122.9815K

Howes, G. G., McCubbin, A. J., Klein, K. G.  Using Field-Particle Correlations to Show that Landau Damping Leads to Spatially Intermittent Particle Energization in Current Sheets 2017APS..DPPNP11158

Klein, K. G., Howes, G. G., Tenbarge, J. M.  Diagnosing collisionless energy transfer using field-particle correlations: gyrokinetic turbulence 2017JPlPh..83d5301K

Klein, K. G.  Characterizing fluid and kinetic instabilities using field-particle correlations on single-point time series 2017PhPl...24e5901K

Howes, G. G., Klein, K. G., Li, T. C.  Diagnosing collisionless energy transfer using field-particle correlations: Vlasov-Poisson plasmas 2017JPlPh..83a7002H

Li, T. C., Howes, G. G., Klein, K. G., TenBarge, J. M.  Energy Dissipation and Landau Damping in Two- and Three-dimensional Plasma Turbulence 2016ApJ...832L..24L

Verscharen, D., Chandran, B. D. G., Klein, K. G., Quataert, E.  Collisionless Isotropization of the Solar-wind Protons by Compressive Fluctuations and Plasma Instabilities 2016ApJ...831..128V

Klein, K. G., Chandran, B. D. G.  Evolution of The Proton Velocity Distribution due to Stochastic Heating in the Near-Sun Solar Wind 2016ApJ...820...47K

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Last updated on July 26, 2018