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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Association of solar wind proton flux extremes with pseudostreamers
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Association of solar wind proton flux extremes with pseudostreamers

机译：协会的太阳风质子通量极端与pseudostreamers

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We investigate the characteristics and solar origins of a subpopulation of the solar wind that possesses extreme values of proton flux. Ulysses observations including solar wind magnetic flux, proton flux, number density and velocity, and ionic composition are examined in this study. We find that the departures of solar wind proton flux from its constancy occur for time intervals leading up to and encompassing the past two solar minima, and the extreme-proton-flux wind possesses the following characteristics: (1) it generally originates from sources middle-distant from the Heliospheric Current Sheet (HCS); (2) it is associated with a broad range of velocities and electron temperatures but excludes very fast/cold wind; (3) it exhibits anticorrelation between electron temperature and proton velocity, as does the rest of the solar wind; (4) it has extreme proton density values relative to the rest of the solar wind; and (5) the extreme-high-proton-flux wind has radial component of open magnetic flux (Br) greater than the rest of the solar wind, and both extreme-high and extreme-low wind do not possess the lowest values of Br flux. Comparing with SOHO EIT 195 ? coronal images, we find the observed extreme-proton-flux wind has temporal and spatial coincidence with the appearance of low-latitude coronal holes present in the recent two solar minima; the magnetic field lines extrapolated by the Potential Field Source Surface model confirm there are coronal pseudostreamer structures involved. So we propose that these extreme-proton-flux winds can be associated with mid- to low-latitude coronal holes and "pseudostreamer" structures. Key Points Extreme-proton-flux solar wind was seen at middle latitudes in two solar minima. This wind has unusual properties compared with the rest of the wind. This wind can be associated with
机译：我们研究的特点和太阳能一个族群的起源的太阳风拥有极端值的质子通量。太阳风观测包括磁通,质子通量、数密度和速度离子成分都在本研究中进行了检查。发现太阳风质子的离职通量的恒常性发生时间间隔前,包括过去两个太阳最小值,extreme-proton-flux风具有以下特点:(1)通常源于middle-distant来源从日球电流片(高碳钢);与广泛的速度但不包括非常和电子温度快速/冷风;电子温度和质子之间的速度,其余的太阳风一样;相对于极端的质子密度值剩下的太阳风。extreme-high-proton-flux风径向组件开放的磁通量(Br)大于其余的太阳风,都极高和极低的风不拥有最低的Br通量的价值观。冠状图像,我们找到了extreme-proton-flux风时间和空间巧合与低纬度的外观日冕洞出现在最近的两个太阳最小值;势场源曲面模型确认有冠状pseudostreamer结构参与。可以与extreme-proton-flux风低纬度日冕洞和中期“pseudostreamer”结构。Extreme-proton-flux太阳风在中间纬度在两个太阳能最小值。不同寻常的特性与其他的相比风。

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