典型文献
On Mechanisms of Proton Perpendicular Heating in the Solar Wind:Test Results Based on Wind Observations
文献摘要：
The solar wind protons undergo significant perpendicular heating when they propagate in the interplanetary space.Stochastic heating and cyclotron resonance heating due to kinetic Alfvén waves(KAWs)are two proposed mechanisms.Which mechanism accounts for the perpendicular heating is still an open question.This paper performs tests for the two mechanisms based on Wind observations during 2004 June and 2019 May.Results show that heating rates in terms of stochastic heating theory considerably depend on the parameter of plasma β.For the solar wind with moderately high β,the theoretical heating rates are comparable to or larger than empirical heating rates,suggesting that the stochastic heating could be a powerful mechanism.For the solar wind with low β,on the contrary,the majority of data have theoretical heating rates much lower than empirical heating rates,showing that the stochastic heating seems to be weak in this case.On the other hand,it is found that,when the propagation angles of KAWs are around 70°,theoretically predicted damping wavenumbers of KAWs are equal to the observed wavenumbers at which magnetic energy spectra become significantly steep.This may imply that resonance heating due to cyclotron damping of KAWs could be another mechanism if KAWs have propagation angles around 70°.
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作者姓名：
Guo-Qing Zhao;Heng-Qiang Feng;De-Jin Wu;Qiang Liu;Yan Zhao;Zhan-Jun Tian
作者机构：
Institute of Space Physics,Luoyang Normal University,Luoyang 471934,China;Henan Key Laboratory of Electromagnetic Transformation and Detection,Luoyang 471934,China;Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China
文献出处：
引用格式：
[1]Guo-Qing Zhao;Heng-Qiang Feng;De-Jin Wu;Qiang Liu;Yan Zhao;Zhan-Jun Tian-.On Mechanisms of Proton Perpendicular Heating in the Solar Wind:Test Results Based on Wind Observations)[J].天文和天体物理学研究,2022(01):96-103
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0.523616
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