Results 121 to 130 of about 2,811,519 (263)

The Prevalence of Resonance Among Young, Close-in Planets

open access: yesThe Astronomical Journal
Multiple planets undergoing disk migration may be captured into a chain of mean-motion resonances with the innermost planet parked near the disk’s inner edge.
Fei Dai   +13 more
doaj   +1 more source

Role of Dynamical Research in the Detection and Characterization of Exoplanets

open access: yes, 2007
9 pages, White Paper Submitted to the ExoPlanet Task ...
Ford, Eric B.   +8 more
openaire   +2 more sources

Let’s Sweep: The Effect of Evolving J 2 on the Resonant Structure of a Three-planet System

open access: yesThe Astrophysical Journal, 2023
Short and ultrashort period planets are peculiar types of exoplanets with periods as short as a few days or less. Although it is challenging to detect them, already several have been observed, with many additional candidates.
Thea H. Faridani   +3 more
doaj   +1 more source

Oceanographic Considerations for Exoplanet Life Detection

open access: yesAstrophysical Journal, 2019
Liquid water oceans are at the center of our search for life on exoplanets because water is a strict requirement for life as we know it. However, oceans are dynamic habitats—and some oceans may be better hosts for life than others.
S. Olson, M. Jansen, D. Abbot
semanticscholar   +1 more source

Spatially resolved spectroscopy across stellar surfaces. I. Using exoplanet transits to analyze 3-D stellar atmospheres

open access: yes, 2017
CONTEXT: High-precision stellar analyses require hydrodynamic modeling to interpret chemical abundances or oscillation modes. Exoplanet atmosphere studies require stellar background spectra to be known along the transit path while detection of Earth ...
Dahlén, Erik   +3 more
core   +2 more sources

Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics 1.0: A General Circulation Model for Simulating the Climates of Rocky Planets

open access: yes, 2017
Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics (ROCKE-3D) is a 3-Dimensional General Circulation Model (GCM) developed at the NASA Goddard Institute for Space Studies for the modeling of atmospheres of Solar ...
Aleinov, Igor   +10 more
core   +1 more source

Solar Wind Power Likely Governs Uranus' Thermosphere Temperature

open access: yesGeophysical Research Letters, Volume 51, Issue 22, 28 November 2024.
Abstract Observations of Uranus in the near‐infrared by ground‐based telescopes from 1992 to 2018 have shown that the planet's upper atmosphere (thermosphere) steadily cooled from ∼700 to ∼450 K. We explain this cooling as due to the concurrent decline in the power of the solar wind incident on Uranus' magnetic field, which has dropped by ∼50% over the
A. Masters   +3 more
wiley   +1 more source

A study of the nonlinear dynamics inside the exoplanetary system Kepler-22 using MATLAB® software

open access: yesEUREKA: Physics and Engineering
Kepler is a discovery-class mission designed to determine the frequency of Earth-radius planets in and near the habitable zone of solar-type stars. A habitable zone of a star is defined as a range of orbits within which a rocky planet can support liquid ...
Azem Hysa
semanticscholar   +1 more source

Synergies between Asteroseismology and Exoplanetary Science

open access: yes, 2017
Over the past decade asteroseismology has become a powerful method to systematically characterize host stars and dynamical architectures of exoplanet systems.
Huber, Daniel
core   +1 more source

Identification of dominant instability modes in power systems based on spatial‐temporal feature mining and TSOA optimization

open access: yesIET Generation, Transmission &Distribution, Volume 18, Issue 21, Page 3424-3436, November 2024.
This paper explores the mapping relationship between simulation data and the stable state of the system, as well as the dominant instability mode. The method enables real‐time identification of dominant instability mode, which bypasses complex physical mechanisms. Firstly, spatio‐temporal feature mining is conducted, where convolutional neural networks
Miao Yu   +5 more
wiley   +1 more source

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