论文标题
核心电子加热太阳风中的离子声波
Core Electron Heating By Triggered Ion Acoustic Waves In The Solar Wind
论文作者
论文摘要
已经研究了Parker太阳能探针轨道上的圆锥体传递，以表明太阳能风芯电子从15个太阳半径出现，温度为55倍或减去5 eV，与从300至800 km/sec的太阳风速无关。在离开15个太阳半径并在没有触发的离子声波的情况下，核心电子温度在太阳半径中以径向距离为r，在1900R-4/3电子电压下变化，因为由绝热膨胀产生了冷却。该系数1900，在观察25天内观察到的最小核心电子垂直温度。在存在触发的离子声波的情况下，对核心电子的加热高达最低温度，即1900R-4/3 eV的两个因子。触发的离子声波是与电子芯加热一致观察到的唯一波浪。它们是在15至30太阳半径之间的太阳距离大于100 Hz的频率下的主要波模式。
Perihelion passes on Parker Solar Probe orbits six through nine have been studied to show that solar wind core electrons emerged from 15 solar radii with a temperature of 55 plus or minus 5 eV, independent of the solar wind speed which varied from 300 to 800 km/sec. After leaving 15 solar radii and in the absence of triggered ion acoustic waves at greater distances, the core electron temperature varied with radial distance, R, in solar radii, as 1900R-4/3 electron volts because of cooling produced by the adiabatic expansion. The coefficient, 1900, reproduces the minimum core electron perpendicular temperature observed during the 25 days of observation. In the presence of triggered ion acoustic waves, the core electrons were isotropically heated as much as a factor of two above the minimum temperature, 1900R-4/3 eV. Triggered ion acoustic waves were the only waves observed in coincidence with the electron core heating. They are the dominant wave mode at frequencies greater than 100 Hz at solar distances between 15 and 30 solar radii.
