2019
DOI: 10.3389/fphy.2019.00108
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Sign Singularity of the Local Energy Transfer in Space Plasma Turbulence

Abstract: 2In weakly collisional space plasmas, the turbulent cascade provides most of the energy that is dissipated at small scales by various kinetic processes. Understanding the characteristics of such dissipative mechanisms requires the accurate knowledge of the fluctuations that make energy available for conversion at small scales, as different dissipation processes are triggered by fluctuations of a different nature. The scaling properties of different energy channels are estimated here using a proxy of the local … Show more

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Cited by 13 publications
(6 citation statements)
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References 98 publications
(127 reference statements)
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“…Our preliminary analysis corroborates previous theoretical and observational works (Osman et al 2012;Greco et al 2012;Servidio et al 2012;Sorriso-Valvo et al 2019;Qudsi et al 2020;Yordanova et al 2021;Sioulas et al 2022b) and indicates that coherent structures can provide a channel for ion heating in the young solar wind. However, enhancements in electron temperature are considerably less significant, and it would be challenging to imagine that intermittent heating could account for the nonadiabatic cooling profile of electrons in the solar wind.…”
Section: Discussionsupporting
confidence: 90%
“…Our preliminary analysis corroborates previous theoretical and observational works (Osman et al 2012;Greco et al 2012;Servidio et al 2012;Sorriso-Valvo et al 2019;Qudsi et al 2020;Yordanova et al 2021;Sioulas et al 2022b) and indicates that coherent structures can provide a channel for ion heating in the young solar wind. However, enhancements in electron temperature are considerably less significant, and it would be challenging to imagine that intermittent heating could account for the nonadiabatic cooling profile of electrons in the solar wind.…”
Section: Discussionsupporting
confidence: 90%
“…In the last decade or so, Vlasov-based simulations have been extensively used to investigate the complexity of plasma turbulence [20][21][22][23][24][25][26][27][28][29] . Numerical experiments suggest a strong connection between turbulence and non-Maxwellian features in the particle DF [30][31][32][33] . Recently, the unprecedented-resolution and high-accuracy of measurements from the Magnetospheric Multiscale Mission (MMS) 5 have enabled direct observation of the velocity space cascade in a space plasmas 34 .…”
mentioning
confidence: 97%
“…Many aspects of how the cascade operates in the kinetic regime are unknown, especially in the outer heliosphere. Debated topics include the preferential ion heating vs the electron heating and temperature anisotropy [18,12,104,117,125]; specific phenomenology dominating in the kinetic regimes; role of turbulence in driving ion beams [122,121] and kinetic microinstabilities [16]; role of ICWs [8], and PUI-driven instabilities [52,112].…”
Section: Dissipation and Heatingmentioning
confidence: 99%