论文标题
未检测到的少数族裔通量作为冠状的缺失链接
Undetected Minority-polarity Flux as the Missing Link in Coronal Heating
论文作者
论文摘要
在过去的几十年中，冠状加热的最广泛偏爱的模型涉及能量的原位耗散，脚点改组会产生多个电流（“ Nanoflare”型号）或Alfv {é} n波，这些波浪泄漏到电晕并泄漏到电晕并发生散热相互作用（波浪热方案）。如前所述，观察结果表明，能量沉积集中在非常低的高度上，冠状环中充满了来自下方的热浓缩材料，这是它们的过度和平坦温度曲线。虽然一种明显的脚点加热机制是通过小规模领域重新连接，但这种可能性似乎已被广泛忽略，因为磁力图几乎没有在活动区域内（AR）内部（AR）内部几乎没有少数族利偏振通量。在这里，我们提出了进一步的示例，以支持我们较早的结论（1）磁力图极大地说明了少数族裔通量的文字内部和“单极”网络的数量，并且（2）小环是\ ion {fe} {9} {9} 17.1 nm moss的主要组成部分。假设小型通量的出现或搅动速率与安静的太阳的混合极性区域相同，我们估计与重新连接相关的能量通量密度，其储存范围为10 $^7 $^7 $ erg erg cm $^cm $^{-2} $ s $ s $ s $^{ - 1 $^{-1} $^{-1} $ suffor to hot the arrona。
During the last few decades, the most widely favored models for coronal heating have involved the in situ dissipation of energy, with footpoint shuffling giving rise to multiple current sheets (the "nanoflare" model) or to Alfv{é}n waves that leak into the corona and undergo dissipative interactions (the wave heating scenario). As has been recognized earlier, observations suggest instead that the energy deposition is concentrated at very low heights, with the coronal loops being filled with hot, dense material from below, which accounts for their overdensities and flat temperature profiles. While an obvious mechanism for footpoint heating would be reconnection with small-scale fields, this possibility seems to have been widely ignored because magnetograms show almost no minority-polarity flux inside active region (AR) plages. Here, we present further examples to support our earlier conclusions (1) that magnetograms greatly underrepresent the amount of minority-polarity flux inside plages and "unipolar" network, and (2) that small loops are a major constituent of \ion{Fe}{9} 17.1 nm moss. On the assumption that the emergence or churning rate of small-scale flux is the same inside plages as in mixed-polarity regions of the quiet Sun, we estimate the energy flux density associated with reconnection with the plage fields to be on the order of 10$^7$ erg cm$^{-2}$ s$^{-1}$, sufficient to heat the AR corona.
