Influence of Photoelectrons on the Structure and Dynamics of the Upper Atmosphere of a Hot Jupiter
arXiv:1706.02098 · doi:10.1134/S1063772917050018
Abstract
A self-consistent, aeronomic model of the upper atmosphere of a "hot Jupiter" including reactions involving suprathermal photoelectrons is presented. This model is used to compute the height profiles of the gas density, velocity, and temperature in the atmosphere of the exoplanet HD 209458b. It is shown that including suprathermal electrons when computing the heating and cooling functions reduces the mass loss rate of the atmosphere by a factor of five.
arXiv commentAccepted for publication in Astronomy Reports, 6 pages, 4 figures
References in corpus (14)
- Atmospheric Escape from Hot Jupiters
- Detection of oxygen and carbon in the hydrodynamically escaping atmosphere of the extrasolar planet HD209458b
- A giant comet-like cloud of hydrogen escaping the warm Neptune-mass exoplanet GJ 436b
- Evaporation of the planet HD189733b observed in HI Lyman-alpha
- Metals in the Exosphere of the Highly Irradiated Planet WASP-12b
- Observations of Mass Loss from the Transiting Exoplanet HD 209458b
- 3D Gas Dynamic Simulation of the Interaction Between the Exoplanet WASP-12b and Its Host Star
- Heating efficiency in hydrogen-dominated upper atmospheres
- The escape of heavy atoms from the ionosphere of HD209458b. II. Interpretation of the observations
- A detailed spectropolarimetric analysis of the planet hosting star WASP-12
- Atmosphere expansion and mass loss of close-orbit giant exoplanets heated by stellar XUV: I. Modeling of hydrodynamic escape of upper atmospheric material
- Types of Gaseous Envelopes of "Hot Jupiter" Exoplanets
- Mass-Loss Rates of "Hot-Jupiter" Exoplanets with Various Types of Gaseous Envelopes
- Thermal structure of a protostellar envelope
Cited by in corpus (7)
- Atmospheric Escape and the Evolution of Close-in Exoplanets
- Survival of a planet in short-period Neptunian desert under effect of photo-evaporation
- Irradiation-driven escape of primordial planetary atmospheres I. The ATES photoionization hydrodynamics code
- On possible types of magnetospheres of hot Jupiters
- Atmospheric mass loss from hot Jupiters irradiated by stellar superflares
- The influence of stellar flare on dynamical state of the atmosphere of exoplanet HD 209458b
- Comparative Analysis of the Model for Exoplanet Atmosphere Outflow