Broad Energy-Band Ions in the Ourter Heliosphere and Their Coupling with Turbulence

HE Jiansen1,2, LIN Rong1,2, CUI Bo1,2, WANG Linghua1,2, ZONG Qiugang1,2

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Journal of Deep Space Exploration ›› 2020, Vol. 7 ›› Issue (6) : 574-583. DOI: 10.15982/j.issn.2096-9287.2020.20200064
Topic:Exploring the Solar System Boundary

Broad Energy-Band Ions in the Ourter Heliosphere and Their Coupling with Turbulence

  • HE Jiansen1,2, LIN Rong1,2, CUI Bo1,2, WANG Linghua1,2, ZONG Qiugang1,2
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Abstract

This paper focuses on the theme of “solar wind in the heliosphere and its interaction with the invading interstellar wind”,and discusses it from three aspects:current cognition,frontier problems,and exploration suggestions. The ions in the heliosphere include primary solar wind ions,pick-up ions converted partially from interstellar wind,and super-thermal ions. Among them,pick-up ions and super-thermal ions have their contribution from the local interstellar medium flow. The deep-space spacecraft have detected the prevalence of two modes in the heliosphere:the inner boundary of the heliosphere,the solar wind,the interplanetary turbulence,and the energy spectrum of the super-thermal ions. There are three types of cutting-edge issues:① the territory never reached,that is,the tail of the heliosphere in the ecliptic plane and the outer heliosphere at high latitudes;② the territory that has been reached,but some key variables have not been detected,such as the picked-up ions in the outer heliosphere;③ the territory and variables that have been reached and detected,but the formation mechanism is unknown,such as the power-law spectrum and dual-mode of the super-thermal ions. To address these problems,we put forward the following suggestions:① to design different flight paths and detect in different directions;② to carry ion spectra instruments with wide energy band,covering the primary solar wind plasma,the pick-up ions,and the super-thermal ions;③ to carry high sensitivity magnetometer to measure the compressible magnetic turbulence in the outer heliosphere.

Keywords

outer heliosphere / interstellar wind / particle spectrum

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HE Jiansen, LIN Rong, CUI Bo, WANG Linghua, ZONG Qiugang. Broad Energy-Band Ions in the Ourter Heliosphere and Their Coupling with Turbulence. Journal of Deep Space Exploration, 2020, 7(6): 574‒583 https://doi.org/10.15982/j.issn.2096-9287.2020.20200064

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