Abstract Details
| Name: Krishna Prasad S. Affiliation: Queen's University Belfast Conference ID: ASI2015_610 Title : Spectroscopic studies of coronal structures using ground- and space-based data Authors and Co-Authors : Thesis Supervisors: D. Banerjee & J. SIngh Affiliation: Indian Institute of Astrophysics Abstract Type : Oral Abstract Category : Sun and the Solar System Abstract : The main energy source for maintaining the solar corona at multi-million kelvin temperatures and the physical mechanism behind the acceleration of fast solar wind are not clearly understood yet. Our knowledge on these issues is advancing with the recent advent of instruments with high spatial, temporal, and spectral resolutions, which at the same time brought many new problems into light. A few such problems motivated the studies presented in this thesis. The possible ambiguity in distinguishing the high speed quasi-periodic upflows from slow magneto-acoustic waves which are observed as propagating disturbances is one interesting issue. This hinders the potential use of these disturbances for seismological applications. The temperature variation along the length of a coronal loop is another unsettled issue which is crucial for determining the plasma heating mechanism. Different imaging and spectroscopic studies were performed in this thesis to improve our understanding on these problems. |