Collisionless Magnetorotational Turbulence in Pair Plasmas: Steady-state Dynamics, Particle Acceleration, and Radiative Cooling
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arXiv
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| Format: | Preprint |
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2024
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| author | Bacchini, Fabio Zhdankin, Vladimir Gorbunov, Evgeny A. Werner, Gregory R. Arzamasskiy, Lev Begelman, Mitchell C. Uzdensky, Dmitri A. |
| author_facet | Bacchini, Fabio Zhdankin, Vladimir Gorbunov, Evgeny A. Werner, Gregory R. Arzamasskiy, Lev Begelman, Mitchell C. Uzdensky, Dmitri A. |
| contents | We present 3D fully kinetic shearing-box simulations of pair-plasma magnetorotational turbulence with unprecedented macro-to-microscopic scale separation. While retrieving the expected fluid behavior of the plasma at large scales, we observe a steepening of turbulent spectra at kinetic scales and substantial angular-momentum transport linked with kinetic processes. For the first time, we provide a definitive demonstration of nonthermal particle acceleration in kinetic magnetorotational turbulence agnostically of initial conditions, by means of a novel strategy exploiting synchrotron cooling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_01399 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Collisionless Magnetorotational Turbulence in Pair Plasmas: Steady-state Dynamics, Particle Acceleration, and Radiative Cooling Bacchini, Fabio Zhdankin, Vladimir Gorbunov, Evgeny A. Werner, Gregory R. Arzamasskiy, Lev Begelman, Mitchell C. Uzdensky, Dmitri A. High Energy Astrophysical Phenomena Plasma Physics We present 3D fully kinetic shearing-box simulations of pair-plasma magnetorotational turbulence with unprecedented macro-to-microscopic scale separation. While retrieving the expected fluid behavior of the plasma at large scales, we observe a steepening of turbulent spectra at kinetic scales and substantial angular-momentum transport linked with kinetic processes. For the first time, we provide a definitive demonstration of nonthermal particle acceleration in kinetic magnetorotational turbulence agnostically of initial conditions, by means of a novel strategy exploiting synchrotron cooling. |
| title | Collisionless Magnetorotational Turbulence in Pair Plasmas: Steady-state Dynamics, Particle Acceleration, and Radiative Cooling |
| topic | High Energy Astrophysical Phenomena Plasma Physics |
| url | https://arxiv.org/abs/2401.01399 |