We study the short-term topological changes of equatorial and polar coronal hole (CH) boundaries, such as a variation of their area and disintegration, associated to reconnection with nearby (within 15° distance) quiescent ...

We present the results of detailed study of a set of activities developed on one of three enclosed sectors of solar region during the period of February 07-13, 2012. We found the sequence of certain topological perturbations ...

We study the different evolutional stages of a large quiescent prominence, mainly considering its dynamic/thermal instabilities occurred close from the boundary of coronal hole (CH). We identify the critical conditions, ...