Results 41 to 50 of about 3,038,400 (211)
The Effects of Non-ideal Mixing in Planetary Magma Oceans and Atmospheres
The Astrophysical JournalSub-Neptunes with hydrogen-rich envelopes are expected to sustain long-lived magma oceans that continuously exchange volatiles with their overlying atmospheres.
Aaron Werlen +4 more
doaj +1 more source
Mesoscale Modeling of Titan’s Shangri‐La Region: The Impact of Surface Properties on Winds
Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.Abstract The knowledge of Titan’s near‐surface atmosphere is sparse. The Huygens descent probe measured winds, and the multiple dune field observations and possible dust storms suggest active near‐surface dynamics. The Dragonfly rotorcraft lander will fly close to the surface in the Shangri‐La region, near the Huygens landing site, where complex dune ...
Maxence Lefèvre +5 more
wiley +1 more source
Metal Oxide Clusters in Gas-giant Exoplanet Atmospheres
The Astrophysical JournalThis study investigates the thermal stability and absorption of metal oxide clusters in exoplanetary atmospheres. Utilizing our thermochemical data, we analyze eight distinct cluster families: magnesium oxide (MgO), silicon monoxide (SiO), titanium ...
Deepak Bisht +8 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 Recently, the first JWST measurement of thermal emission from a rocky exoplanet was reported. The inferred dayside brightness temperature of TRAPPIST-1 b at 15 μ m is consistent with the planet having no atmosphere and therefore no mechanism by which to ...
Jegug Ih +3 more
doaj +1 more source
Propagation Dynamics of Fast Electron Beam and Its Electron Cyclotron Maser Emission
Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.Abstract Fast electron beams (FEBs) and coherent radio bursts both are very common plasma activity phenomena in the cosmos. The electron cyclotron maser (ECM) instability driven by FEBs trapped in magnetic fields can directly amplify radio wave radiations.
Ling Chen +3 more
wiley +1 more source
The Astronomical JournalAtmospheric escape’s potential to shape the exoplanet population motivates detailed observations of systems actively undergoing escape. AU Mic is a young and active M dwarf hosting two close-in transiting sub- to Neptune-sized planets. Atmospheric escape
Keighley E. Rockcliffe +10 more
doaj +1 more source
The composition and dynamics of exoplanet atmospheres. [PDF]
The study of exoplanets has rapidly developed in the last twenty years, and the detailed characterization of planetary atmospheres has become a key area of research. For transiting planets around bright stars, atmospheric features can be detected with transmission spectroscopy. I will present a low resolution transmission spectrum of WASP-52b, and show
openaire +1 more source
A Solar Analog Model for Decrease in Far Ultraviolet Irradiance Under a Grand Minimum
Earth and Space Science, Volume 13, Issue 9, September 2026.Abstract Solar analog field stars having a range of magnetic activity can provide an estimate of solar spectral irradiance (SSI) variability relevant to understanding the Sun's influence on terrestrial climate. This approach is particularly useful for far ultraviolet (FUV) irradiance that cannot be observed from the Earth surface.
D. Lubin, C. Melis, D. Tytler
wiley +1 more source
Aerosols in Exoplanet Atmospheres [PDF]
, 2021 Observations of exoplanet atmospheres have shown that aerosols, like in the Solar System, are common across a variety of temperatures and planet types. The formation and distribution of these aerosols are inextricably intertwined with the composition and
Vivien Parmentier +7 more
core +1 more source
The Astrophysical Journal LettersWe present the transmission spectrum of the original transiting hot Jupiter HD 209458b from 2.3 to 5.1 μ m as observed with the NIRCam instrument on the James Webb Space Telescope (JWST). Previous studies of HD 209458b’s atmosphere have given conflicting
Qiao Xue +5 more
doaj +1 more source