3D Aeronomy Modeling of Close-in Exoplanets

Abstract

We present a 3D fully selfconsistent multi-fluid hydrodynamic aeronomy model to study the structure of a hydrogen dominated expanding upper atmosphere around the hot Jupiter HD 209458b and the warm Neptune GJ 436b. In comparison to previous studies with 1D and 2D models, the present work finds such 3D features as zonal flows in upper atmosphere reaching up to 1 km/s, the tilting of the planetary outflow by Coriolis force by up to 45 degrees and its compression around equatorial plane by tidal forces. We also investigated in details the influence of Helium (He) on the structure of the thermosphere. It is found that by decrease of the barometric scale-height, the He presence in the atmosphere strongly affects the H2 dissociation front and the temperature maximum.

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Cited by in corpus (22)

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• Global 3D hydrodynamic modeling of in-transit Lyα absorption of GJ436b
• Rapid escape of ultra-hot exoplanet atmospheres driven by Hydrogen Balmer absorption
• Is pi Men c's atmosphere hydrogen-dominated? Insights from a non-detecton of Hy Ly-alpha absorption
• The impact of intrinsic magnetic field on the absorption signatures of elements probing the upper atmosphere of HD209458b
• GJ 436b and the stellar wind interaction: simulations constraints using Ly$\alpha$ and H$\alpha$ transits
• Global 3D simulation of the upper atmosphere of HD189733b and absorption in metastable HeI and Lyα lines
• Three-dimensional hydrodynamic simulations of the upper atmosphere of $\pi$ Men c: comparison with Ly$\alpha$ transit observations
• Modeling the Ly$\alpha$ transit absorption of the hot Jupiter HD 189733b
• The space weather around the exoplanet GJ 436 b. II. Stellar wind-exoplanet interactions
• Simulation of 10830 Å absorption with a 3D hydrodynamic model reveals the solar He abundance in upper atmosphere of WASP-107b
• Three-dimensional modelling of absorption by various species for hot Jupiter HD 209458b
• Transit Ly-$\alpha$ signatures of terrestrial planets in the habitable zones of M dwarfs
• Probing atmospheric escape through metastable He I triplet lines in 15 exoplanets observed with SPIRou
• Atmosphere escape inferred from modelling the H$\alpha$ transmission spectrum of WASP-121b
• Star-Planet Interactions: A Computational View
• Mysterious non-detection of HeI (23S) transit absorption of GJ436b
• The enigmatic abundance of atomic hydrogen in Saturn's upper atmosphere
• Estimating the Mass Escaping Rates of Radius-valley-spanning Planets in the TOI-431 System via X-Ray and Ultraviolet Evaporation
• Mass loss by atmospheric escape from extremely close-in planets
• Comparative Analysis of the Model for Exoplanet Atmosphere Outflow