Results 21 to 30 of about 79,405 (157)

On the origin of eccentricities among extrasolar planets

open access: yes, 2008
Most observed extrasolar planets have masses similar to, but orbits very different from, the gas giants of our solar system. Many are much closer to their parent stars than would have been expected and their orbits are often rather eccentric.
Adams   +38 more
core   +1 more source

Dynamical architectures of planetary systems induced by orbital migration

open access: yes, 2009
The aim of this talk is to present the most recent advances in establishing plausible planetary system architectures determined by the gravitational tidal interactions between the planets and the disc in which they are embedded during the early epoch of ...
Papaloizou, John C. B.   +1 more
core   +1 more source

Impacts of Tidal Locking on Magnetospheric Energy Input to Exoplanet Atmospheres

open access: yesThe Astrophysical Journal
We investigate the effect of planetary corotation on energy dissipation within the magnetosphere–ionosphere system of exoplanets. Using magnetohydrodynamic simulations, we find that tidally locked exoplanets have a higher cross polar cap potential (CPCP)
Fatemeh Bagheri   +2 more
doaj   +1 more source

Is our Sun a Singleton?

open access: yes, 2007
Most stars are formed in a cluster or association, where the number density of stars can be high. This means that a large fraction of initially-single stars will undergo close encounters with other stars and/or exchange into binaries.
Adams F C   +18 more
core   +1 more source

Determining the State of Jupiter’s Magnetosphere Using In Situ and Remote Sensing Observations

open access: yesThe Astrophysical Journal
While Jupiter’s magnetosphere is primarily governed by internal processes, variations in solar wind conditions can significantly modulate magnetospheric energy.
J. W. Sun   +11 more
doaj   +1 more source

Response of Martian Tail Lobes to Heliospheric Current Sheet: Tianwen-1 and MAVEN Joint Observations

open access: yesThe Astrophysical Journal Letters
Martian magnetotail lobes, mainly formed by the draped interplanetary magnetic field extending downstream in the tailward direction, are largely controlled by the solar wind and respond sensitively to variations in upstream drivers.
Z. Z. Guo   +11 more
doaj   +1 more source

Progress in the modeling of Earth and planetary internal magnetic fields

open access: yes地球与行星物理论评
A majority of the planets in the Solar System are characterized by intrinsic magnetic fields that co-rotate with these celestial bodies. With ongoing advances in human deep-space exploration, magnetic field models have been established for all known ...
Jiawei Gao   +9 more
doaj   +1 more source

Fine Structures of Radio Bursts from Flare Star AD Leo with FAST Observations

open access: yesThe Astrophysical Journal, 2023
Radio bursts from nearby active M-dwarfs have been frequently reported and extensively studied in solar or planetary paradigms. Whereas, their substructures or fine structures remain rarely explored despite their potential significance in diagnosing the ...
Jiale Zhang   +10 more
doaj   +1 more source

Spectroscopic Detection of Biosignatures in Natural Ice Samples as a Proxy for Icy Moons

open access: yesLife, 2023
Some of the icy moons of the solar system with a subsurface ocean, such as Europa and Enceladus, are the targets of future space missions that search for potential extraterrestrial life forms.
Francisco Calapez   +6 more
doaj   +1 more source

Formation and Evolution of Planetary Systems in Presence of Highly Inclined Stellar Perturbers [PDF]

open access: yes, 2011
The presence of highly eccentric extrasolar planets in binary stellar systems suggests that the Kozai effect has played an important role in shaping their dynamical architectures.
Batygin, Konstantin   +2 more
core   +4 more sources

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