253 citations · 2.9k across the 51 of their papers we have counts for
12 papers · 1 filter
Hydrodynamic escape of water vapor atmospheres near very active stars
Colin P. Johnstone
When exposed to the high energy X-ray and ultraviolet radiation of a very active star, water vapor in the upper atmospheres of planets can be photodissociated and rapidly lost to s…
Solar XUV and ENA-driven water loss from early Venus' steam atmosphere
H. I. M. Lichtenegger, K. G. Kislyakova, P. Odert +8
The influence of the hydrogen hydrodynamic upper atmosphere escape, driven by the solar soft X-ray and extreme ultraviolet radiation (XUV) flux, on an expected magma ocean outgasse…
The Kepler-11 system: evolution of the stellar high-energy emission and {initial planetary} atmospheric mass fractions
D. Kubyshkina, L. Fossati, A. J. Mustill +8
The atmospheres of close-in planets are strongly influenced by mass loss driven by the high-energy (X-ray and extreme ultraviolet, EUV) irradiation of the host star, particularly d…
Modelling atmospheric escape and MgII near-ultraviolet absorption of the highly irradiated hot Jupiter WASP-12b
N. K. Dwivedi, M. L. Khodachenko, I. F. Shaikhislamov +8
We present two-dimensional multi-fluid numerical modelling of the upper atmosphere of the hot Jupiter WASP-12b. The model includes hydrogen chemistry, and self-consistently describ…
Detecting volcanically produced tori along orbits of exoplanets using UV spectroscopy
Kristina G. Kislyakova, Luca Fossati, Denis Shulyak +17
We suggest to use the Hubble Space Telescople (HST) follow-up observations of the TESS targets for detecting possible plasma tori along the orbits of exoplanets orbiting M dwarfs.…
Close-in sub-Neptunes reveal the past rotation history of their host stars: atmospheric evolution of planets in the HD3167 and K2-32 planetary systems
Daria Kubyshkina, Patricio Cubillos, Luca Fossati +7
Planet atmospheric escape induced by high-energy stellar irradiation is a key phenomenon shaping the structure and evolution of planetary atmospheres. Therefore, the present-day pr…
Impact of Space Weather on Climate and Habitability of Terrestrial Type Exoplanets
V. S. Airapetian, R. Barnes, O. Cohen +43
The current progress in the detection of terrestrial type exoplanets has opened a new avenue in the characterization of exoplanetary atmospheres and in the search for biosignatures…
Stellar activity and planetary atmosphere evolution in tight binary star systems
C. P. Johnstone, E. Pilat-Lohinger, T. Lüftinger +2
Context. In tight binary star systems, tidal interactions can significantly influence the rotational and orbital evolution of both stars, and therefore their activity evolution. Th…
Extreme hydrodynamic losses of Earth-like atmospheres in the habitable zones of very active stars
C. P. Johnstone, M. L. Khodachenko, T. Lüftinger +3
Aims. In this letter, we calculate for the first time the full transonic hydrodynamic escape of an Earth-like atmosphere. We consider the case of an Earth-mass planet with an atmos…
Reconstructing Extreme Space Weather from Planet Hosting Stars
V. S. Airapetian, V. Adibekyan, M. Ansdell +80
The field of exoplanetary science is making rapid progress both in statistical studies of exoplanet properties as well as in individual characterization. As space missions provide…
Exoplanet host-star properties: the active environment of exoplanets
John P. Pye, David Barrado, Rafael A. Garcia +12
The primary objectives of the ExoplANETS-A project are to: establish new knowledge on exoplanet atmospheres; establish new insight on influence of the host star on the planet atmos…
Slingshot prominence evolution for a solar-like star
Carolina Villarreal D'Angelo, Moira Jardine, Colin P. Johnstone +1
Although the present-day Sun rotates too slowly to exhibit centrifugally-supported 'slingshot prominences', at some time during its past it may have formed these clouds of cool gas…