Analyses and modelling of coronal holes observed by CORONAS-1. I. Morphology and magnetic field configuration

Two low-latitude coronal holes observed by CORONAS-1 in April and June 1994 are analysed together with magnetic field measurements obtained from Wilcox and Kitt Peak Solar Observatories. To estimate the comparable temperature of these two coronal holes, the YOHKOH observations are also utilized. Using this information, we have constructed three-dimensional magnetic field lines to illustrate the geometrical configuration of these coronal holes....