The fine structure of a nanoflare-heated corona
The fine structure of a nanoflare-heated corona
复制标题
纳焰加热电晕的精细结构
DOI：
10.1007/bf00690717
复制
发表时间：
1993
期刊：
影响因子：
2.8
通讯作者：
P. Cargill
中科院分区：
文献类型：
--
作者：
P. Cargill
太阳日冕被小尺度事件（纳米耀斑）加热这一猜想的含义被检验了。研究表明，即使这些纳米耀斑是小规模的（加热面积远小于1弧秒2）和脉冲的，日冕仍然可能是相当均匀的。特别是，填充因子（定义为x射线和EUV辐射的冠状体积与总体积的比值）可以很容易地达到有序单位。未来对填充因子的实验测定将有助于估算在纳米耀斑期间被加热的日冕物质的体积。
Implications of the conjecture that the solar corona is heated by small-scale events (nanoflares) are examined. It is shown that even if these nanoflares are small-scale (heating areas much smaller than 1 arc sec2) and impulsive, the corona may still be rather homogeneous. In particular, the filling factor (defined as the ratio of the coronal volume radiating in X-rays and EUV to the total volume) can easily be of order unity. Future experimental determination of the filling factor could prove useful in estimating the volume of coronal material that is heated during nanoflares.