2019
DOI: 10.3847/1538-4357/ab3e01
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Turbulence versus Fire-hose Instabilities: 3D Hybrid Expanding Box Simulations

Abstract: The relationship between a decaying plasma turbulence and proton fire hose instabilities in a slowly expanding plasma is investigated using three-dimensional (3-D) hybrid expanding box simulations. We impose an initial ambient magnetic field along the radial direction, and we start with an isotropic spectrum of large-scale, linearly-polarized, random-phase Alfvénic fluctuations with zero cross-helicity. A turbulent cascade rapidly develops and leads to a weak proton heating that is not sufficient to overcome t… Show more

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Cited by 22 publications
(12 citation statements)
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“…Solar wind expansion also drives plasma anisotropy (e.g., Hellinger et al 2015Hellinger et al , 2019, which alters Alfvén modes (see , and references therein) and can excite multiple kinetic instabilities (see review by Chen et al 2016;Matteini 2016, and references therein). Ion-scale waves generated by these instabilities should constrain ion anisotropy (Hellinger et al 2006;Hellinger & Trávníček 2008;Bale et al 2009;Yoon et al 2019Yoon et al , 2022 and may contribute to ion heating (Maruca et al 2011;Telloni et al 2019;Woodham et al 2019;González et al 2020).…”
Section: Introductionmentioning
confidence: 99%
“…Solar wind expansion also drives plasma anisotropy (e.g., Hellinger et al 2015Hellinger et al , 2019, which alters Alfvén modes (see , and references therein) and can excite multiple kinetic instabilities (see review by Chen et al 2016;Matteini 2016, and references therein). Ion-scale waves generated by these instabilities should constrain ion anisotropy (Hellinger et al 2006;Hellinger & Trávníček 2008;Bale et al 2009;Yoon et al 2019Yoon et al , 2022 and may contribute to ion heating (Maruca et al 2011;Telloni et al 2019;Woodham et al 2019;González et al 2020).…”
Section: Introductionmentioning
confidence: 99%
“…In general, hybrid-kinetic models have proved to be capable of satisfactorily catching the main kinetic physics at play for a large number of problems, ranging from fluid and kinetic instabilities (Hellinger & Matsumoto 2000a;Matteini et al 2006;Califano et al 2008;Henri et al 2013;Kunz et al 2014) to collisionless shocks (Lembège et al 2009;Caprioli & Spitkovsky 2013;Weidl et al 2016), dynamo effects (Rincon et al 2016;St-Onge & Kunz 2018), MR (Le et al 2016;Palmroth et al 2017;Franci et al 2017;Wang et al 2019;Califano et al 2020), and kinetic-scale turbulence (Servidio et al 2015;Grošelj et al 2017;Cerri et al 2018Cerri et al , 2019Hellinger et al 2019;Wang et al 2019). The main goal of our project is to investigate the possibility of improving the electron description in hybrid-kinetic models.…”
Section: Introductionmentioning
confidence: 99%
“…Several 3D hybrid models of SW plasma were recently developed and applied primarily to study turbulence cascade to ion scales in SW plasma (e.g. Vasquez 2015;Vasquez et al 2020;Cerri et al 2017;Franci et al 2018;Hellinger et al 2019;Markovskii et al 2020). Recently, the nonlinear evolution of the proton-α drift instability and the α particle temperature anisotropy driven instability were modeled using the full 3D hybrid model (Ofman et al 2019) for the expected parameters close to the Sun (∼ 10R s ), a region to be explored by PSP at perihelia (Encounters 22-24 in the years 2024-2025).…”
Section: Introductionmentioning
confidence: 99%