论文标题
太阳磁场强度与毫米亮度温度之间的相关性
Correlation between the solar magnetic field strength and the millimeter brightness temperature
论文作者
论文摘要
通过ALMA获得的毫米波长的太阳图像显示与磁通图具有显着的对应关系。在本文中，我们通过比较ALMA以1.2 mm的速度与SDO/HMI磁图进行比较并分析其相关性来研究这种对应关系。已经发现，色球网络和活动区域显示出正相关，其中亮度温度随着视线磁场强度的增加而增加，而日光点具有负相关性。安静的太阳区域没有显示出亮度温度与磁场的任何依赖性。热bremsstrahlung作为观察到的相关性的最佳解释。
Images of the Sun at millimeter wavelengths obtained by ALMA show a significant correspondence with the magnetograms. In this paper, we investigate this correspondence by comparing ALMA full-disk solar image taken at 1.2 mm with a SDO/HMI magnetogram and analyze their correlation. It is found that chromospheric network and active regions show a positive correlation where brightness temperature is increasing with the line-of-sight magnetic field strength, while sunspots have a negative correlation. Quiet Sun regions do not show any dependence of the brightness temperature with the magnetic field. Thermal bremsstrahlung is given as the best explanation for the observed correlations.
