Results 71 to 80 of about 79,405 (157)

Extrasolar Planet Orbits and Eccentricities

open access: yes, 2003
The known extrasolar planets exhibit many interesting and surprising features--extremely short-period orbits, high-eccentricity orbits, mean-motion and secular resonances, etc.--and have dramatically expanded our appreciation of the diversity of possible
Tremaine, Scott, Zakamska, Nadia L.
core   +2 more sources

Asteroseismic Characterization of 142 Solar-like Oscillators Hosting Confirmed Exoplanets

open access: yesThe Astrophysical Journal Supplement Series
We present the largest catalog of exoplanet host stars with solar-like oscillations compiled to date, providing a powerful resource for refining stellar and planetary characterization via asteroseismology.
Wen-Xu Lin   +8 more
doaj   +1 more source

Mirror-mode Structures in Coronal Mass Ejection Sheaths

open access: yesThe Astrophysical Journal
Coronal mass ejections (CMEs) compress the upstream solar wind as they travel through interplanetary space, forming sheath regions and preceding shocks rich in plasma dynamics.
J. H. Gao   +3 more
doaj   +1 more source

Seasonal Effects of the Changing Photon Scattering Rates on Mercury’s Exospheric Structure

open access: yesThe Planetary Science Journal
Emission in Mercury’s exosphere observed from the ground and by spacecraft is produced by resonant scattering of sunlight. The process of resonant scattering changes the structure of the exosphere owing to the transfer of momentum between the incident ...
Matthew H. Burger   +5 more
doaj   +1 more source

Identification and comparative analysis of polar cusp region at Earth and the giant planets

open access: yes地球与行星物理论评
The polar cusp region serves as a critical gateway for magnetosheath and solar wind plasma to enter planetary magnetospheres, playing a fundamental role in shaping solar wind-magnetosphere interactions.
Yan Xu   +6 more
doaj   +1 more source

Magnetohydrodynamic Study of Mars’s Response to Short-term Solar Wind Dynamic Pressure Enhancements

open access: yesThe Astrophysical Journal
As a weakly magnetized planet, Mars interacts directly with the highly variable solar wind, where small-scale and short-duration structures are ubiquitous. Among solar wind parameters, dynamic pressure, as the dominant external pressure, plays a key role
Wenyi Sun   +4 more
doaj   +1 more source

Progress in the study of typical planetary landforms over the past 30 years: a bibliometric analysis in CiteSpace

open access: yesFrontiers in Astronomy and Space Sciences
Landform investigation reports are fundamental datasets for ecology, geology, and geography as they record the morphological traces of planetary surface processes, which have been the focus of top journals and distinguished scholars.
Yutong Zhang   +5 more
doaj   +1 more source

Two-source Terrestrial Planet Formation with a Sweeping Secular Resonance

open access: yesThe Astronomical Journal
The models that most successfully reproduce the orbital architecture of the solar system terrestrial planets start from a narrow annulus of material that grows into embryos and then planets.
Max Goldberg   +2 more
doaj   +1 more source

Implications for the formation of Oort cloud-like structures and interstellar comets in dense environments

open access: yesAstronomy & Astrophysics
Most stars form in dense stellar environments, where frequent close encounters can strongly perturb and reshape the early architecture of planetary systems.
Torres Santiago
doaj   +1 more source

The Impact of Space Weather on Earth’s Atmospheric Chemistry and Climate: Is N2O a Solution to the Faint Young Sun Paradox?

open access: yesThe Astrophysical Journal
Space weather could have a profound impact on Earth’s climate. Compared to the present-day Sun, the young Sun would have been more magnetically active and should have experienced more frequent extreme space weather events, in the form of coronal mass ...
Lorenzo Biasiotti   +8 more
doaj   +1 more source

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