Abstract Details
| Name: Venkata Raman Affiliation: Vikram Sarabhai Space Centre Conference ID: ASI2019_338 Title : Investigation of the solar wind and its interaction with Martian atmosphere using MAVEN Authors and Co-Authors : V. Venkata Raman & R. Satheesh Thampi Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : Solar wind interacts directly with the upper atmosphere of Mars due to the lack of global magnetic field. Neutral particles in the upper atmosphere are predominantly ionized by extreme ultraviolet (EUV) photons and through interactions with solar wind charged particles, resulting in the formation of ionosphere. Reactions involving recombination of electrons and ions between different ions determine the chemistry and composition of the upper atmosphere and the photochemical escape of atmospheric gases in to space. The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission has the suite of instruments to study these processes. The solar wind flux provide one of the key energy inputs that can drive atmospheric escape from the Martian system via non-thermal mechanism. The solar wind ion fluxes and the electron energies at the Martian environment are measured using Solar Wind Ion Analyzer (SWIA) and Solar wind Electron Analyser (SWEA) respectively. The effect of solar activity on the escape rate of volatiles will be discussed using the observations from Imaging Ultraviolet Spectrograph (IUVS), Neutral gas and Ion Mass Spectrometer (NGIMS) and SupraThermal And Thermal Ion Composition (STATIC) instruments on board MAVEN. |