Inspired by the finding that the large waiting time of solar flares presents a power-law distribution, we investigate the waiting time distribution (WTD) of cor
<正>We study the magnetic structure of five well-known active regions that produced great flares (X5 or larger). The six flares under investigation are the X12
We analyze the spectral line broadening of those magneto-sensitive lines in solar magnetized atmospheres. The broadening at the line wings is due to the increas