829 citations · 1.4k across the 22 of their papers we have counts for
23 papers
Evidence for Solar-Cycle Modulation of the Alpha-to-Proton Temperature Ratio in Solar Wind
Aakash Gupta, Yogesh, Dibyendu Chakrabarty +2
The influence of collisional age on the alpha-to-proton temperature ratio has been explored in the past. However, the modulation of this ratio with respect to t…
Statistical insights on the decorrelation lengths of solar wind parameters at L1 point under varying conditions
Yogesh, Aparupa Apsara Baruah, Dibyendu Chakrabarty +3
Understanding the spatial coherence of solar wind plasma and magnetic field properties is essential for interpreting multi-spacecraft observations and for characterizing the large-…
Phase-Space Energy Transfer of Wave-Particle Interactions using the Field-Particle Correlation Technique and Linear Plasma Theory with JET-PLUME
Collin R. Brown, Gregory G. Howes, Kristopher G. Klein +1
The collisionless transfer of energy between fields and particles through wave-particle interactions is a fundamental process in space plasmas but remains incompletely characterize…
Velocity space origins of pressure-strain interaction in multi-population distributions and its application to magnetic reconnection
M. Hasan Barbhuiya, Paul A. Cassak, Sarah Conley +7
A forefront research question is how energy evolves in weakly collisional plasmas for which departures from local thermodynamic equilibrium (LTE) are significant. The standard appr…
Compressive Structures in the Foreshock of Collisionless Shocks
Savvas Raptis, Domenico Trotta, Drew L. Turner +11
Collisionless shocks are fundamental accelerators of energetic particles; yet, the observations of nonlinear foreshock structures, which are essential in acceleration processes, di…
Solar Wind Heating Near the Sun: A Radial Evolution Approach
Yogesh, Leon Ofman, Kristopher Klein +19
Characterizing the plasma state in the near-Sun environment is essential to constrain the mechanisms that heat and accelerate the solar wind. In this study, we use Parker Solar Pro…
Unveiling the Velocity-Space Signature of Ion Cyclotron Damping Using Liouville Mapping
Rui Huang, Gregory G. Howes
Ion cyclotron damping is a key mechanism for the dissipation of electromagnetic wave energy in weakly collisional plasmas. This study presents a combined approach using Liouville m…
Plasma Seismology: Fully Exploiting the Information Contained in Velocity Space of Kinetic Plasmas using the Morrison G Transform
Frederick Skiff, Gregory G. Howes
Weakly collisional plasmas contain a wealth of information about the dynamics of the plasma in the particle velocity distribution functions, yet our ability to exploit fully that i…
The Kinetic Analogue of the Pressure-Strain Interaction
Sarah A. Conley, James Juno, Jason M. TenBarge +4
Energy transport in weakly collisional plasma systems is often studied with fluid models and diagnostics. However, the applicability of fluid models is necessarily limited when col…
The Fundamental Parameters of Astrophysical Plasma Turbulence and its Dissipation: Nonrelativistic Limit
Gregory G. Howes
A specific set of dimensionless plasma and turbulence parameters is introduced to characterize the nature of turbulence and its dissipation in weakly collisional space and astrophy…
The Velocity-Space Signature of Transit-Time Damping
Rui Huang, Gregory G. Howes, Andrew J. McCubbin
Transit-time damping (TTD) is a process in which the magnetic mirror force -- induced by the parallel gradient of magnetic field strength -- interacts with resonant plasma particle…
Electron Energization in Reconnection: Eulerian versus Lagrangian Perspectives
Jason M. TenBarge, James Juno, Gregory G. Howes
Particle energization due to magnetic reconnection is an important unsolved problem for myriad space and astrophysical plasmas. Electron energization in magnetic reconnection has t…
Multi-point Assessment of the Kinematics of Shocks (MAKOS): A Heliophysics Mission Concept Study
Katherine A. Goodrich, Lynn B. Wilson, Steven Schwartz +6
Collisionless shocks are fundamental processes that are ubiquitous in space plasma physics throughout the Heliosphere and most astrophysical environments. Earth's bow shock and int…
The Importance of Electron Landau Damping for the Dissipation of Turbulent Energy in Terrestrial Magnetosheath Plasma
Arya Afshari, Gregory Howes, Craig Kletzing +2
Heliospheric plasma turbulence plays a key role in transferring the energy of large-scale magnetic field and plasma flow fluctuations to smaller scales where the energy can be diss…
A Field-Particle Correlation Analysis of a Perpendicular Magnetized Collisionless Shock: I. Theory
Gregory G. Howes, James Juno, Jason M. TenBarge +3
Collisionless shocks play an important role in space and astrophysical plasmas by irreversibly converting the energy of the incoming supersonic plasma flows into other forms, inclu…
Nonlinear energy transfer and current sheet development in localized Alfven wavepacket collisions in the strong turbulence limit
J. L. Verniero, G. G. Howes, K. G. Klein
In space and astrophysical plasmas, turbulence is responsible for transferring energy from large scales driven by violent events or instabilities, to smaller scales where turbulent…
Measuring Collisionless Damping in Heliospheric Plasmas using Field-Particle Correlations
Kristopher G Klein, Gregory G Howes
An innovative field-particle correlation technique is proposed that uses single-point measurements of the electromagnetic fields and particle velocity distribution functions to inv…
A Dynamical Model of Plasma Turbulence in the Solar Wind
G. G. Howes
A dynamical approach, rather than the usual statistical approach, is taken to explore the physical mechanisms underlying the nonlinear transfer of energy, the damping of the turbul…
Current Sheets and Collisionless Damping in Kinetic Plasma Turbulence
J. M. TenBarge, G. G. Howes
We present the first study of the formation and dissipation of current sheets at electron scales in a wave-driven, weakly collisional, 3D kinetic turbulence simulation. We investig…
Evidence of Critical Balance in Kinetic Alfven Wave Turbulence Simulations
J. M. TenBarge, G. G. Howes
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…
Prediction of the Proton-to-Total Turbulent Heating in the Solar Wind
G. G. Howes
This paper employs a recent turbulent heating prescription to predict the ratio of proton-to-total heating due to the kinetic dissipation of Alfvenic turbulence as a function of he…
Howes et al. Reply
G. G. Howes, S. C. Cowley, W. Dorland +4
Howes et al. Reply to Comment on "Kinetic Simulations of Magnetized Turbulence in Astrophysical Plasmas" arXiv:0711.4355
Astrophysical gyrokinetics: kinetic and fluid turbulent cascades in magnetized weakly collisional plasmas
A. A. Schekochihin, S. C. Cowley, W. Dorland +4
We present a theoretical framework for plasma turbulence in astrophysical plasmas (solar wind, interstellar medium, galaxy clusters, accretion disks). The key assumptions are that…