Search Results - "Hellinger, P"

The Role of Parametric Instabilities in Turbulence Generation and Proton Heating: Hybrid Simulations of Parallel-propagating Alfvén Waves by González, C. A., Tenerani, A., Velli, M., Hellinger, P.

“…Large-amplitude Alfvén waves tend to be unstable to parametric instabilities that result in a decay process of the initial wave into different daughter waves…”
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A hybrid-Vlasov model based on the current advance method for the simulation of collisionless magnetized plasma by Valentini, F., Trávníček, P., Califano, F., Hellinger, P., Mangeney, A.

“…We present a numerical scheme for the integration of the Vlasov–Maxwell system of equations for a non-relativistic plasma, in the hybrid approximation, where…”
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FIRE HOSE INSTABILITY DRIVEN BY ALPHA PARTICLE TEMPERATURE ANISOTROPY by Matteini, L., Hellinger, P., Schwartz, S. J., Landi, S.

“…ABSTRACT We investigate properties of a solar wind-like plasma, including a secondary alpha particle population exhibiting a parallel temperature anisotropy…”
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Cometary ion instabilities in the solar wind by Matteini, L., Schwartz, S.J., Hellinger, P.

“…We review some of the processes that characterize the interaction of the solar wind with newborn cometary ions. Instabilities generated by the typical…”
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Magnetic Field Turbulence in the Solar Wind at Sub‐ion Scales: In Situ Observations and Numerical Simulations by Matteini, L., Franci, L., Alexandrova, O., Lacombe, C., Landi, S., Hellinger, P., Papini, E., Verdini, A.

“…We investigate the transition of the solar wind turbulent cascade from MHD to sub‐ion range by means of a detailed comparison between in situ observations and…”
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New kinetic instability: Oblique Alfvén fire hose by Hellinger, P., Matsumoto, H.

“…Two instabilities could take place in plasma with a bi‐Maxwellian proton distribution function with Tp‖ > Tp⊥, where Tp‖ and Tp⊥ are proton temperatures,…”
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Nonlinear mirror mode dynamics: Simulations and modeling by Califano, F., Hellinger, P., Kuznetsov, E., Passot, T., Sulem, P. L., Trávníček, P. M.

“…With the aim to understand the origin of the pressure‐balanced magnetic structures in the form of holes and humps commonly observed in the solar wind and…”
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Mirror structures above and below the linear instability threshold : Cluster observations, fluid model and hybrid simulations by GENOT, V, BUDNIK, E, HELLINGER, P, PASSOT, T, BELMONT, G, TRAVAICEK, P. M, SULEM, P.-L, LUCEK, E, DANDOURAS, I

“…Using 5 years of Cluster data, we present a detailed statistical analysis of magnetic fluctuations associated with mirror structures in the magnetosheath. We…”
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Mirror instability: From quasi-linear diffusion to coherent structures by Hellinger, P., Kuznetsov, E. A., Passot, T., Sulem, P. L., Trávníček, P. M.

“…A model for the nonlinear dynamics of mirror modes near the instability threshold is presented. By matching the quasi‐linear theory for the space‐averaged…”
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Timing mirror structures observed by Cluster with a magnetosheath flow model by GENOT, V, BROUSSILLOU, L, BUDNIK, E, HELLINGER, P, TRAVNICEK, P. M, LUCEK, E, DANDOURAS, I

“…The evolution of structures associated with mirror modes during their flow in the Earth's magnetosheath is studied. The fact that the related magnetic…”
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ARTEMIS Science Objectives by Sibeck, D. G., Angelopoulos, V., Brain, D. A., Delory, G. T., Eastwood, J. P., Farrell, W. M., Grimm, R. E., Halekas, J. S., Hasegawa, H., Hellinger, P., Khurana, K. K., Lillis, R. J., Øieroset, M., Phan, T.-D., Raeder, J., Russell, C. T., Schriver, D., Slavin, J. A., Travnicek, P. M., Weygand, J. M.

“…NASA’s two spacecraft ARTEMIS mission will address both heliospheric and planetary research questions, first while in orbit about the Earth with the Moon and…”
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Reformation of perpendicular shocks: Hybrid simulations by Hellinger, P., Trávnícek, P., Matsumoto, H.

“…We show that in one‐dimensional hybrid simulations supercritical perpendicular shocks have a well‐defined, slightly oscillating structure (including foot,…”
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Nonlinear competition between the whistler and Alfvén fire hoses by Hellinger, P., Matsumoto, H.

“…We examine a competition between the whistler and Alfvén fire hoses driven by bi‐Maxwellian protons with Tp‖ > Tp⊥, where Tp‖ and Tp⊥ are proton temperatures,…”
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Alfvén wave filamentation and dispersive phase mixing in a high-density channel: Landau fluid and hybrid simulations by Borgogno, D., Hellinger, P., Passot, T., Sulem, P. L., Trávníček, P. M.

“…The propagation of dispersive Alfvén waves in a low-beta collisionless plasma with a high-density channel aligned with the ambient magnetic field, is studied…”
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Excitation of electron acoustic waves near the electron plasma frequency and at twice the plasma frequency by Schriver, D., Ashour‐Abdalla, M., Sotnikov, V., Hellinger, P., Fiala, V., Bingham, R., Mangeney, A.

“…In this paper we investigate the nonlinear development of the electron acoustic instability that can lead to the transfer of wave energy to frequencies just…”
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Electromagnetic ion beam instabilities: Oblique pulsations by Hellinger, P., Mangeney, A.

“…We present results of a two‐dimensional hybrid simulation of the electromagnetic proton beam instability. We show that for a case of cold and rather high…”
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Upstream whistlers generated by protons reflected from a quasi-perpendicular shock by Hellinger, P., Mangeney, A.

“…Numerical simulations of collisionless supercritical quasi‐perpendicular shocks suggest that the upstream whistlers may be generated near the shock by the…”
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Hybrid Simulation of Collisionless Shock Formation in Support of Laboratory Experiments at Unr by Sotnikov, V I, Ruhl, H, Presura, R, Cowan, T, Leboeuf, J N, Hellinger, P, Travnicek, P

“…The problem of producing collisionless shocks in the laboratory is of great interest for space and astrophysical plasmas. One approach is based on the idea of…”
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Hybrid simulations of Z-pinches by Sotnikov, V.I., Bauer, B.S., Leboeuf, J.N., Hellinger, P., Trávnı́ček, P., Fiala, V.

“…Three-dimensional hybrid simulations with kinetic ions and fluid electrons of Z-pinch plasmas are being used to investigate the linear and nonlinear…”
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ANISOTROPY OF THIRD-ORDER STRUCTURE FUNCTIONS IN MHD TURBULENCE by Verdini, Andrea, Grappin, Roland, Hellinger, Petr, Landi, Simone, Müller, Wolf Christian

“…ABSTRACT The measure of the third-order structure function, , is employed in the solar wind to compute the cascade rate of turbulence. In the absence of a mean…”
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