论文标题
Sunward繁殖惠斯勒波与太阳风中的局部磁场孔相处：Parker太阳探测器在35.7 Sun Radii处观测到
Sunward propagating whistler waves collocated with localized magnetic field holes in the solar wind: Parker Solar Probe observations at 35.7 Sun radii
论文作者
论文摘要
在约35.7太阳半径上，太阳风的帕克太阳能探针任务的观察表明，惠斯勒波数据包的存在，频率低于0.1 f/fce（在航天器框架中为20-80 Hz）。这些波通常与磁场幅度的局部最小值相吻合，或者与称为折返的磁场突然偏转。它们的阳光传播导致多普勒频率从200-300 Hz到20-80 Hz（从0.2 f/fce到0.5 f/fce）。这些波的极化从准平行到明显的倾斜，具有接近共振锥的波形正常角度。它们的峰值幅度可以大至2至4 nt。这样的值约占背景磁场的10％，这比在上午1点观察到的要多得多。最近的数值研究表明，这样的波可能在打破热通量和将超颗粒电子种群散射到光环群体中可能起关键作用。
Observations by the Parker Solar Probe mission of the solar wind at about 35.7 solar radii reveal the existence of whistler wave packets with frequencies below 0.1 f/fce (20-80 Hz in the spacecraft frame). These waves often coincide with local minima of the magnetic field magnitude or with sudden deflections of the magnetic field that are called switchbacks. Their sunward propagation leads to a significant Doppler frequency downshift from 200-300 Hz to 20-80 Hz (from 0.2 f/fce to 0.5 f/fce). The polarization of these waves varies from quasi-parallel to significantly oblique with wave normal angles that are close to the resonance cone. Their peak amplitude can be as large as 2 to 4 nT. Such values represent approximately 10% of the background magnetic field, which is considerably more than what is observed at 1 a.u. Recent numerical studies show that such waves may potentially play a key role in breaking the heat flux and scattering the Strahl population of suprathermal electrons into a halo population.
