ON THE STATISTICS OF MACROSPICULES
ON THE STATISTICS OF MACROSPICULES
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DOI：
10.1088/0004-637x/808/2/135
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发表时间：
2015-07
期刊：
影响因子：
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通讯作者：
S. Bennett;R. Erdélyi
中科院分区：
文献类型：
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作者：
S. Bennett;R. Erdélyi
新一代的太阳望远镜提高了太阳局部特征在空间、时间和光谱上的分辨率，使人们能够详细研究大针状体。大针状体是各种各样的太阳喷射物的成员，确定它们属于这个家族的位置是非常重要的，特别是考虑到它们是穿透过渡区和低日冕的色球事件。我们研究宏观针状体的整体性质，包括时间和空间。我们还研究了大针状体属性和样本时间周期本身之间可能的关系，它被选为从太阳能最小到太阳能最大的斜坡的代理。利用太阳动力观测站进行测量，以提供必要的时间分辨率和覆盖范围。在每个时间点，从基部到尖端测量大骨针的长度，并在每个步骤记录长度的一半处的宽度。然后应用测量值来确定统计特性和它们之间的关系。很明显，最大速度、最大长度和寿命的性质都是在特定的、既定的条件下相关的。我们提供了适当的缩放的物理性质，这将是一个有用的测试床建模。此外，我们注意到，特征的最大长度和寿命显示出与样本历元的一些相关性，因此，通过代理太阳最小值到最大值的斜坡。
A new generation of solar telescopes has led to an increase in the resolution of localized features seen on the Sun spatially, temporally, and spectrally, enabling a detailed study of macrospicules. Macrospicules are members of a wide variety of solar ejecta and ascertaining where they belong in this family is vitally important, particularly given that they are chromospheric events which penetrate the transition region and lower corona. We examine the overall properties of macrospicules, both temporal and spatial. We also investigate possible relationships between the macrospicule properties and the sample time period itself, which is selected as a proxy for the ramp from solar minimum to solar maximum. Measurements are taken using the Solar Dynamic Observatory to provide the necessary temporal resolution and coverage. At each point in time, the length of the macrospicule is measured from base to tip and the width is recorded at half the length at each step. The measurements were then applied to determine the statistical properties and relationships between them. It is evident that the properties of maximum velocity, maximum length, and lifetime are all related in specific, established terms. We provide appropriate scaling in terms of the physical properties, which would be a useful test bed for modeling. Also, we note that the maximum lengths and lifetimes of the features show some correlation with the sample epoch and, therefore, by proxy the solar minimum to maximum ramp.