MICROSCOPIC NONTHERMAL PLASMA MOTIONS OF CORONAL LOOPS IN A SOLAR ACTIVE REGION

摘要

We present a spectroscopic observation of a solar active region NOAA 7590 with a coronagraph at the Norikura Solar Observatory, which provides high-resolution spectra of the visible coronal emission lines (Fe x #LAMTA#6374, Fe xiv #lamta#5303, Ca xv #lamta#5694) with a spatial sampling of 2".0 x 2".3. Nonthermal veloci-