Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Howes, Gregory"'
Autor:
Skiff, Frederick, Howes, Gregory G.
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 information remains relatively primitive. Here we aim to present the fu
Externí odkaz:
http://arxiv.org/abs/2411.05772
Autor:
Conley, Sarah A., Juno, James, TenBarge, Jason M., Barbhuiya, M. Hasan, Cassak, Paul A., Howes, Gregory G., Lichko, Emily
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 collisions are weak or absent, and using a fluid approach can obscure kin
Externí odkaz:
http://arxiv.org/abs/2408.06508
Autor:
Howes, Gregory G.
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 astrophysical plasmas. Key considerations are discussed for the development of
Externí odkaz:
http://arxiv.org/abs/2402.12829
Publikováno v:
J. Plasma Phys. 90 (2024) 535900401
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 particles in a time-varying magnetic field, leading to the collisionless dampi
Externí odkaz:
http://arxiv.org/abs/2401.16697
Particle energization due to magnetic reconnection is an important unsolved problem for myriad space and astrophysical plasmas. Electron energization in magnetic reconnection has traditionally been examined from a particle, or Lagrangian, perspective
Externí odkaz:
http://arxiv.org/abs/2310.17480
Plasma turbulence plays a critical role in the transport of energy from large-scale magnetic fields and plasma flows to small scales, where the dissipated turbulent energy ultimately leads to heating of the plasma species. A major goal of the broader
Externí odkaz:
http://arxiv.org/abs/2310.01242
Autor:
Montag, Peter, Howes, Gregory, McGinnis, Daniel, Afshari, Arya, Starkey, Michael, Desai, Mihir
Collisionless shocks play a key role in the heliosphere at planetary bow shocks by governing the conversion of the upstream bulk kinetic energy of the solar wind flow to other forms of energy in the downstream, including bulk plasma heat, acceleratio
Externí odkaz:
http://arxiv.org/abs/2306.09061
We analyze the generation of kinetic instabilities and their effect on the energization of ions in non-relativistic, oblique collisionless shocks using a 3D-3V simulation by $\texttt{dHybridR}$, a hybrid particle-in-cell code. At sufficiently high Ma
Externí odkaz:
http://arxiv.org/abs/2211.15786
Autor:
Juno, James, Brown, Collin R., Howes, Gregory G., Haggerty, Colby C., TenBarge, Jason M., Wilson III, Lynn B., Caprioli, Damiano, Klein, Kristopher G.
Examining energization of kinetic plasmas in phase space is a growing topic of interest, owing to the wealth of data in phase space compared to traditional bulk energization diagnostics. Via the field-particle correlation (FPC) technique and using mu
Externí odkaz:
http://arxiv.org/abs/2211.15340
The field-particle correlation technique utilizes single-point measurements to uncover signatures of various particle energization mechanisms in turbulent space plasmas. The signature of Landau damping by electrons has been found in both simulations
Externí odkaz:
http://arxiv.org/abs/2204.00104