Modelling the Upper Atmosphere of Gas-Giant Exoplanets Irradiated by Low-Mass Stars
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Beschreibung
This PhD thesis details the development of a new 1D ionospheric model to describe the upper atmospheres of extrasolar giant plants. The upper atmospheres of Hot Jupiters are subject to extreme radiation conditions that can result in rapid atmospheric escape. The composition and structure of these planets’ upper atmospheres are affected by high-energy emissions from the host star. The nature of these emissions depends on the stellar type and age, making them important factors in understanding the behaviour of exoplanetary atmospheres.
This PhD thesis details the development of a new 1D ionospheric model to describe the upper atmospheres of extrasolar giant plants. The upper atmospheres of Hot Jupiters are subject to extreme radiation conditions that can result in rapid atmospheric escape. The composition and structure of these planets’ upper atmospheres are affected by high-energy emissions from the host star. The nature of these emissions depends on the stellar type and age, making them important factors in understanding the behaviour of exoplanetary atmospheres.
Nominated as an outstanding PhD thesis by the Imperial College London, London, UK Provides the description of upper atmospheric modeling on extrasolar giant planets (EGPs) Shows the calculation of escape rates from EGP atmospheres around stars of different activity levels Presents the first exoplanetary upper atmosphere model to include a rigorous description of secondary ionization by photoelectrons and their secondaries Includes supplementary material: sn.pub/extras
Autor*in
Joshua Chadney
Themen in »Modelling the Upper Atmosphere of Gas-Giant Exoplanets Irradiated by Low-Mass Stars«
Exoplanetary Aeronomy Exoplanetary Upper Atmosphere Ionosphere Thermosphere Low-mass Stars Exoplanet Host Star Stellar XUV Radiation Exoplanet Mass Loss