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Related papers: Compositional layering in Io driven by magmatic se…

200 papers

Seismic mapping of the top of the inner core indicates two distinct areas of high P-wave velocity, the stronger one located beneath Asia, and the other located beneath the Atlantic. This two-fold pattern supports the idea that a…

Geophysics · Physics 2024-08-07 Aditya Varma , Binod Sreenivasan

A theoretical model that describes the evolution of a suspension in which crystals can sediment to form a dense cumulate or may produce a light flotation crust has been derived in a companion paper. We use this model to study the thermal…

Earth and Planetary Astrophysics · Physics 2021-08-03 Cyril Sturtz , Angela Limare , Stephen Tait , Édouard Kaminski

The circulation in Europa's ocean determines the degree of thermal, mechanical and chemical coupling between the ice shell and the silicate mantle. Using global direct numerical simulations, we investigate the effect of heterogeneous tidal…

Geophysics · Physics 2023-12-20 Daphné G. Lemasquerier , Carver J. Bierson , Krista M. Soderlund

A terrestrial planet is molten during formation and may remain so if subject to intense insolation or tidal forces. Observations continue to favour the detection and characterisation of hot planets, potentially with large outgassed…

Earth and Planetary Astrophysics · Physics 2019-11-11 Dan J. Bower , Daniel Kitzmann , Aaron S. Wolf , Patrick Sanan , Caroline Dorn , Apurva V. Oza

Juno has allowed clear, high-resolution imaging of Io's polar volcanoes using the Jovian Infrared Auroral Mapper (JIRAM) instrument. We have used data from JIRAM's M-band (4.78 um) imager from eleven Juno orbits to construct a global map of…

Earth and Planetary Astrophysics · Physics 2024-09-25 M. Pettine , S. Imbeah , J. Rathbun , A. Hayes , R. Lopes-Gautier , A. Mura , F. Tosi , F. Zambon , S. Bertolino

On the long nuclear time scale of stellar main-sequence evolution, even weak mixing processes can become relevant for redistributing chemical species in a star. We investigate a process of "differential heating," which occurs when a…

Solar and Stellar Astrophysics · Physics 2015-06-17 R. Andrássy , H. C. Spruit

We present spatially resolved measurements of SO$_2$ and NaCl winds on Io at several unique points in its orbit: before and after eclipse, and at maximum eastern and western elongation. The derived wind fields represent a unique case of…

Earth and Planetary Astrophysics · Physics 2024-12-11 Alexander E. Thelen , Katherine de Kleer , Martin A. Cordiner , Imke de Pater , Arielle Moullet , Statia Luszcz-Cook

Volatile molecules containing hydrogen, carbon, and nitrogen are key components of planetary atmospheres. In the pebble accretion model for rocky planet formation, these volatile species are accreted during the main planetary formation…

Earth and Planetary Astrophysics · Physics 2023-03-15 Anders Johansen , Thomas Ronnet , Martin Schiller , Zhengbin Deng , Martin Bizzarro

We use a fully 3-dimensional thermal evolution model to examine the effects of a non-uniform surface albedo on the subsurface thermal structure of comets. Surface albedo markings cast "thermal shadows", with strong lateral thermal…

Earth and Planetary Astrophysics · Physics 2015-05-30 A. Guilbert-Lepoutre , D. Jewitt

Magnetic geometry has a significant effect on the level of turbulent transport in fusion plasmas. Here, we model and analyze this dependence using multiple machine learning methods and a dataset of > 200,000 nonlinear simulations of…

Io is the most volcanically active body in the Solar System. This volcanic activity results in the ejection of material into Io's atmosphere, which may then escape from the atmosphere to form various structures in the jovian magnetosphere,…

The upper atmospheres of Mars and Titan, as well as those on many other planetary bodies, exhibit significant density variations vs. altitude that are interpreted as gravity waves. Such data is then used to extract vertical temperature…

Earth and Planetary Astrophysics · Physics 2018-12-04 Ludivine Leclercq , Robert E. Johnson , Hayley H Williamson , Orenthal J. Tucker

The irradiation of protoplanetary discs by central stars is the main heating mechanism for discs, resulting in their flared geometric structure. In a series of papers, we investigate the deep links between 2D self-consistent disc structure…

Earth and Planetary Astrophysics · Physics 2015-05-14 Yasuhiro Hasegawa , Ralph E. Pudritz

We use a population synthesis model that includes pebbles and gas accretion, planetary migration, and a simplified chemistry scheme to study the formation of hot-Jupiters. Models have been proposed that these planets can either originate…

Earth and Planetary Astrophysics · Physics 2017-03-22 Mohamad Ali-Dib

Planets that are embedded in the changing magnetic fields of their host stars can experience significant induction heating in their interiors caused by the planet's orbital motion. For induction heating to be substantial, the planetary…

Earth and Planetary Astrophysics · Physics 2018-05-23 K. G. Kislyakova , L. Fossati , C. P. Johnstone , L. Noack , T. Lueftinger , V. V. Zaitsev , H. Lammer

Updated formation and structure models of Jupiter predict a metal-poor envelope. This is at odds with the two to three times solar metallicity measured by the Galileo probe. Additionally, Juno data imply that water and ammonia are enriched.…

Earth and Planetary Astrophysics · Physics 2024-03-26 Simon Müller , Ravit Helled

An detailed study of the thermodynamical state of nuclear matter in transport calculations of heavy--ion reactions is presented. In particular we determine temperatures from an analysis of the local momentum space distribution on one hand,…

Nuclear Theory · Physics 2007-05-23 T. Gaitanos , C. Fuchs , H. H. Wolter

Complex organic molecules serve as indicators of molecular diversity. Their detection on comets, planets, and moons has prompted inquiries into their origins, particularly the conditions conducive to their formation. One hypothesis suggests…

Earth and Planetary Astrophysics · Physics 2024-12-13 T. Benest Couzinou , O. Mousis , G. Danger , A. Schneeberger , A. Aguichine , A. Bouquet

A study of a reacting boundary layer flow with heat transfer at conditions typical for configurations at elevated pressures has been performed using a set of direct numerical simulations. Effects of wall temperatures are investigated,…

Fluid Dynamics · Physics 2021-02-16 Nikolaos Perakis , Oskar Haidn , Matthias Ihme

We simulate several magnetic reconnection processes in the low solar chromosphere/photosphere, the radiation cooling, heat conduction and ambipolar diffusion are all included. Our numerical results indicate that both the high temperature($…

Solar and Stellar Astrophysics · Physics 2016-12-14 Lei Ni , Jun Lin , Ilia I. Roussev , Brigitte Schmieder