Abstract Details

Name: Prabhu Kesavan
Affiliation: Indian institute of astrophysics
Conference ID: ASI2020_461
Title : Recurrent halpha surges on the periphery of active region.
Authors and Co-Authors : K. Prabhu, B. Ravindra, Vijayakumar H Doddamani, Tundup Stanzin
Abstract Type : Poster
Abstract Category : Sun and the Solar System
Abstract : Chromospheric observations of the Sun plays a important role in understanding the mass and energy released into the interplanetary space from the Corona. Halpha observations of the Sun helps us to understand the characteristics of the small scale features such as surges, mini-filaments to large scale eruptions such as filaments and prominences from the solar atomosphere. With the installation of a 20 cm aperture telescope at the high altitude station IAO-Merak, halpha observation of the Sun is being carried out with better image quality and higher temporal cadence. In this presentation the results and analysis of the recurrent surge events observed with the telescope will be presented. The surges are mainly caused due to magnetic flux cancellation between the existing negative flux and newly emerging positive flux.