论文标题
太阳风氦气的先驱太阳周期发作
Solar Wind Helium Abundance Heralds Solar Cycle Onset
论文作者
论文摘要
我们研究了太阳能氦气到氢化丰度（$ a_ \ mathrm {he} $）与太阳周期发作的关系。使用OMNI/LO数据，我们表明$ A_ \ Mathrm {He} $在Sunspot Number（SSN）minima之前增加。我们还确定了在周期发作之前直接发生的$ a_ \ mathrm {he} $中的快速耗竭和恢复。这个$ a_ \ mathrm {he} $关闭发生在大约在太阳风速的同一时间（$ v_ \ mathrm {sw} $），这意味着它是由与驱动$ a_ \ mathrm {he} $ solar cyarcy calce cacile caliviation variiation and $ v_ swielt and sw swiest的机制形成的。连续的$ a_ \ mathrm {he} $ shutoffs之间的时间通常在相应的太阳周期长度的顺序上。使用Brightpoint（BP）测量来提供上下文，我们推断出这种关闭可能与相邻的太阳能循环的重叠以及在太阳能最小值期间较老的太阳能周期的赤道通量取消相关。
We study the solar wind helium-to-hydrogen abundance's ($A_\mathrm{He}$) relationship to solar cycle onset. Using OMNI/Lo data, we show that $A_\mathrm{He}$ increases prior to sunspot number (SSN) minima. We also identify a rapid depletion and recovery in $A_\mathrm{He}$ that occurs directly prior to cycle onset. This $A_\mathrm{He}$ Shutoff happens at approximately the same time across solar wind speeds ($v_\mathrm{sw}$), implying that it is formed by a mechanism distinct from the one that drives $A_\mathrm{He}$'s solar cycle scale variation and $v_\mathrm{sw}$-dependent phase offset with respect to SSN. The time between successive $A_\mathrm{He}$ shutoffs is typically on the order of the corresponding solar cycle length. Using Brightpoint (BP) measurements to provide context, we infer that this shutoff is likely related to the overlap of adjacent solar cycles and the equatorial flux cancelation of the older, extended solar cycle during Solar Minima.
