Results 81 to 90 of about 3,219 (219)

The Influences of Hydrogen–Silicate–Iron Miscibility on the Demographics of Sub-Neptunes and Super-Earths

open access: yesThe Astrophysical Journal
Models based on variable miscibility among hydrogen, molten silicate, and molten iron, coupled with atmospheric escape, can reproduce the observed occurrence density structure of sub-Neptunes and super-Earths in mass–radius space.
Edward D. Young, Aaron Werlen
doaj   +1 more source

Advancing Heliophysics and Space Weather Modeling Through Open Science

open access: yesSpace Weather, Volume 24, Issue 6, June 2026.
Abstract We present a community‐wide effort to develop a strategy and action plan to advance heliophysics and space weather modeling through open science. While open science has the potential to enhance the quality and pace of scientific discovery, its application to scientific modeling requires more careful consideration regarding open data and open ...
C. Corti   +87 more
wiley   +1 more source

Characterization of exoplanet hosts [PDF]

open access: yes, 2013
Spectroscopic analysis of exoplanet hosts and the stellar sample from which they are drawn provides abundances and other properties that quantitively constrain models of planet formation.
Valenti Jeff A., Jeff A. Valenti
core   +1 more source

Rotation‐Controlled Diurnal Evolution of Uranus' Asymmetric Bow Shock at Equinox

open access: yesAGU Advances, Volume 7, Issue 3, June 2026.
Abstract Uranus possesses the most extreme magnetic and rotational geometry in the solar system, resulting in a uniquely dynamic and asymmetric interaction between its magnetosphere and the solar wind. Here we investigate the diurnal evolution of the Uranian bow shock (BS) at equinox using global multifluid magnetohydrodynamic simulations constrained ...
X. Cao, C. Paty, F. Chu, J. Lei
wiley   +1 more source

Three-dimensional Orbital Architectures and Detectability of Adjacent Companions to Hot Jupiters

open access: yesThe Astrophysical Journal
The orbital properties of the (as yet) small population of hot Jupiters with nearby planetary companions provide valuable constraints on the past migration processes of these systems.
Thomas MacLean, Juliette Becker
doaj   +1 more source

The Role of Planetary Rotation in Polar Cusp Localization

open access: yesGeophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Juno observations have revealed that Jupiter's polar cusps are displaced toward dusk and even the nightside, contradicting the Earth‐derived paradigm that is confined to narrower ranges near noon. These findings underscore the overlooked influence of planetary rotation on magnetospheric dynamics, exposing a critical gap in current theoretical ...
Junjie Chen   +9 more
wiley   +1 more source

A Tale of Dynamical Instabilities and Giant Impacts in the Exoplanet Radius Valley

open access: yesThe Astrophysical Journal Letters
The size distribution of planets with radii between 1 R _⊕ and 4 R _⊕ peaks near 1.4 R _⊕ and 2.2 R _⊕ , with a dip around 1.8 R _⊕ —the so-called “radius valley.” Recent statistical analyses suggest that planets within this valley (1.5 
Sho Shibata, Andre Izidoro
doaj   +1 more source

Lithium Niobate Quadratic Integrated Nonlinear Photonics: Enabling Ultra‐Wide Bandwidth and Ultrafast Photonic Engines

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
This perspective surveys emerging quantum and classical photonic applications across operating wavelengths and timescales, highlighting persistent technological gaps in integrated light sources. We examine the unique advantages of quadratic nonlinear photonics on the thin‐film lithium niobate (TFLN) platform and discuss strategies for realizing ...
Meng Tian   +7 more
wiley   +1 more source

Sulfur Dioxide and Other Molecular Species in the Atmosphere of the Sub-Neptune GJ 3470 b

open access: yesThe Astrophysical Journal Letters
We report observations of the atmospheric transmission spectrum of the sub-Neptune exoplanet GJ 3470 b taken using the Near-Infrared Camera on JWST.
Thomas G. Beatty   +15 more
doaj   +1 more source

Formation and evolution of exoplanets in different environments

open access: yes, 2017
Invited Review. To appear in Astronomical Society of the Pacific (ASP) Conference Series "Non-Stable Universe: Energetic Resources, Activity Phenomena and Evolutionary Processes" dedicated to the 70th anniversary of Byurakan Astrophysical ...
openaire   +2 more sources

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