Magnetic properties of x-ray bright points

Magnetic properties of x-ray bright points
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DOI:
10.1007/bf02260212
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发表时间:
1977-07
期刊:
影响因子:
2.8
通讯作者:
L. Golub;A. Krieger;J. Harvey;G. Vaiana
L. Golub;A. Krieger;J. Harvey;G. Vaiana
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
L. Golub;A. Krieger;J. Harvey;G. Vaiana

文献摘要

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使用高分辨率 KPNO 磁图和同步 S-054 软 X 射线太阳图像序列,我们比较了 X 射线亮点 (XBP) 和短暂活动区域 (ER) 的特性。除了非常新出现的或旧的和腐烂的 XBP 之外,所有 XBP 在磁图上都显示为双极特征。我们发现,磁双极子的间距随着 XBP 的年龄而增加,平均出现增长率为 2.2 ± 0.4 km s−1。典型 XBP 存活约 8 小时后的总磁通量约为 2 x 1019Mx。 XBP 寿命与总磁通量之间存在比例关系,相当于寿命每天 ≈ 1020Mx。
Using high resolution KPNO magnetograms and sequences of simultaneous S-054 soft X-ray solar images we have compared the properties of X-ray bright points (XBP) and ephemeral active regions (ER). All XBP appear on the magnetograms as bipolar features, except for very newly emerged or old and decayed XBP. We find that the separation of the magnetic bipoles increases with the age of the XBP, with an average emergence growth rate of 2.2 ± 0.4 km s−1. The total magnetic flux in a typical XBP living about 8 hr is found to be ≈ 2 x 1019Mx. A proportionality is found between XBP lifetime and total magnetic flux, equivalent to ≈ 1020Mx per day of lifetime.