Abstract Details
| Name: SUDIP MANDAL Affiliation: IIA, Bengaluru Conference ID: ASI2019_519 Title : Multi-wavelength study of waves and Solar atmospheric magneto-seismology Authors and Co-Authors : SUDIP MANDAL Abstract Type : Oral Abstract Category : Thesis Abstract : Corona, the outermost layer of the solar atmosphere, is made up with very hot and taneous plasma material. The density and temperature structuring of this layer, is largely inhomogenous. Temperatures, at certain locations, can reach upto tens of million kelvin (MK). One of the key questions regarding the coronal physics is to identify the ubiquitous source(s) which can sustain this high-temperature profile of the coronal plasma. One of the potential candidates in this case, is the family of magnetohydrodynamic (MHD) waves. This thesis is focused on examining the different properties of solar magnetohydrodynamic (MHD) waves, specifically the slow magnetoacoustic mode, as seen with modern high-resolution space-based telescopes. Three key aspects: Generation, Propagation, and Damping of these waves are studied rigorously in this thesis. A combination of high resolution spectroscopic and imaging data are used for the unambiguous detection of slow waves. Different generation scenarios and damping mechanisms of these waves in large coronal structures, such as active region loops, polar plumes-interplumes etc, have also been examined. To supplement the observed results, 3-D numerical simulations are also carried out, along with the advanced ‘forward modelling’ technique to explain the observed wave properties. |