Results 31 to 40 of about 79,405 (157)

Martian Ionospheric Cold Hydrogen Ion Escape at Solar Maximum: First Observations

open access: yesThe Astrophysical Journal
The water escape from Mars to space could be in the form of hydrogen and oxygen ions as driven by solar wind–Mars interactions. Although oxygen ion escape has been extensively investigated, the H ^+ escape rate was measured only at solar minimum.
Qi Xu   +10 more
doaj   +1 more source

Cross Sections for Planetary Systems Interacting with Passing Stars and Binaries

open access: yes, 2015
Most planetary systems are formed within stellar clusters, and these environments can shape their properties. This paper considers scattering encounters between solar systems and passing cluster members, and calculates the corresponding interaction cross
Adams, Fred C., Li, Gongjie
core   +1 more source

Observational Evidence for the Modulation of Magnetopause Position by Solar Wind Turbulence

open access: yesThe Astrophysical Journal Letters
It has long been known that magnetopause position is primarily controlled by the solar wind dynamic pressure and the interplanetary magnetic field. This classical view, however, largely overlooks the ubiquitous role of solar wind turbulence. Consequently,
Yaxin Gu   +13 more
doaj   +1 more source

Star-exoplanet interactions: A growing interdisciplinary field in heliophysics

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Traditionally, heliophysics is characterized as the study of the near-Earth space environment, where plasmas and neutral gases originating from the Earth, the Sun, and other solar system bodies interact in ways that are detectable only through in-situ or
K. Garcia-Sage   +21 more
doaj   +1 more source

Habitability in Different Milky Way Stellar Environments: a Stellar Interaction Dynamical Approach

open access: yes, 2013
Every Galactic environment is characterized by a stellar density and a velocity dispersion. With this information from literature, we simulated flyby encounters for several Galactic regions, numerically calculating stellar trajectories as well as orbits ...
Jiménez-Torres, Juan J.   +3 more
core   +1 more source

3D model of hydrogen atmospheric escape from HD209458b and HD189733b: radiative blow-out and stellar wind interactions [PDF]

open access: yes, 2013
Transit observations in Ly-alpha of HD209458b and HD189733b revealed signatures of neutral hydrogen escaping the planets. We present a 3D particle model of the dynamics of the escaping atoms, and calculate theoretical Ly-alpha absorption line profiles ...
Bourrier, Vincent   +1 more
core   +2 more sources

Scaling properties of planetary calderas and terrestrial volcanic eruptions [PDF]

open access: yesNonlinear Processes in Geophysics, 2012
Volcanism plays an important role in transporting internal heat of planetary bodies to their surface. Therefore, volcanoes are a manifestation of the planet's past and present internal dynamics. Volcanic eruptions as well as caldera forming processes are
L. Sanchez, R. Shcherbakov
doaj   +1 more source

Excitation and Propagation of Eccentricity Disturbances in Planetary Systems

open access: yes, 2004
The high eccentricities of the known extrasolar planets remain largely unexplained. We explore the possibility that eccentricities are excited in the outer parts of an extended planetary disk by encounters with stars passing at a few hundreds of AU ...
Dutrey A.   +4 more
core   +2 more sources

Extrasolar Planet Interactions

open access: yes, 2008
The dynamical interactions of planetary systems may be a clue to their formation histories. Therefore, the distribution of these interactions provides important constraints on models of planet formation.
Correia   +10 more
core   +1 more source

Statistical Investigations of the Radial Interplanetary Magnetic Field Component Impact on the Magnetotail Current Sheet Structure of Mars: MAVEN Observations

open access: yesThe Astrophysical Journal
In this study, we investigated the role of interplanetary magnetic field (IMF) orientation in controlling the location and structure of the current sheet (CS) in the Martian magnetotail.
Yuanzheng Wen   +5 more
doaj   +1 more source

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