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Context. The seismology of early-type stars is limited by our incomplete understanding of gravito-inertial modes. Aims. We develop a short-wavelength asymptotic analysis for gravito-inertial modes in rotating stars. Methods. The…

Solar and Stellar Astrophysics · Physics 2016-03-02 Vincent Prat , François Lignières , Jérôme Ballot

The dynamical interaction of minor bodies (such as comets or asteroids) with planets plays an essential role in the planetary system's architecture and evolution. As a result of these interactions, structures like the Kuiper belt and the…

Earth and Planetary Astrophysics · Physics 2023-07-12 Santiago Torres , Smadar Naoz , Gongjie Li , Sanaea C. Rose

Planets and the stars they orbit are born from the same cloud of gas and dust, and the primordial compositions of rocky exoplanets have been assumed to have iron and refractory abundance ratios consistent with their host star. To test this…

Earth and Planetary Astrophysics · Physics 2024-09-16 Casey L. Brinkman , Alex S. Polanski , Daniel Huber , Lauren M. Weiss , Diana Valencia , Mykhaylo Plotnykov

Near real-time damage diagnosis of building structures after extreme events (e.g., earthquakes) is of great importance in structural health monitoring. Unlike conventional methods that are usually time-consuming and require human expertise,…

Signal Processing · Electrical Eng. & Systems 2019-10-25 Seyed Omid Sajedi , Xiao Liang

Static structure models, which map mass-radius constraints to bulk planet composition, are frequently used to categorise exoplanets due to their computational efficiency and the high-level insight they offer into planetary properties.…

Earth and Planetary Astrophysics · Physics 2026-04-20 Harrison Nicholls , Oliver Shorttle , Tim Lichtenberg , Flavia Pascal

In the canonical model of Moon formation, a Mars-sized protoplanet "Theia" collides with proto-Earth at close to their mutual escape velocity $v_{\rm esc}$ and a common impact angle 45{\deg}. The "graze-and-merge" collision strands a…

Earth and Planetary Astrophysics · Physics 2021-10-04 Erik Asphaug , Alexandre Emsenhuber , Saverio Cambioni , Travis S. J. Gabriel , Stephen R. Schwartz

Planetary systems with multiple transiting planets are beneficial for understanding planet occurrence rates and system architectures. Although we have yet to find a solar system analogue, future surveys may detect multiple terrestrial…

Earth and Planetary Astrophysics · Physics 2026-01-12 Bethlee Lindor , Eric Agol

We perform a systematic assessment of models for the equation of state (EOS) of dense matter in the context of recent neutron star mass and radius measurements to obtain a broad picture of the structure of neutron stars. We demonstrate that…

Nuclear Theory · Physics 2015-01-27 Andrew W. Steiner , Stefano Gandolfi , Farrukh J. Fattoyev , William G. Newton

We present a new scaling law to predict the loss of atmosphere from planetary collisions for any speed, angle, impactor mass, target mass, and body compositions, in the regime of giant impacts onto broadly terrestrial planets with…

Earth and Planetary Astrophysics · Physics 2020-10-02 Jacob A. Kegerreis , Vincent R. Eke , David C. Catling , Richard J. Massey , Luis F. A. Teodoro , Kevin J. Zahnle

Context. We investigate the effects of including material strength in multi-material planetesimal collisions. Aims. The differences between strengthless material models and including the full elasto-plastic model for solid bodies with…

Earth and Planetary Astrophysics · Physics 2014-07-31 Thomas I. Maindl , Rudolf Dvorak , Roland Speith , Christoph Schäfer

Our knowledge of the strengths of small bodies in the Solar System is limited by our poor understanding of their internal structures, and this, in turn, clouds our understanding of the formation and evolution of these bodies. Observations…

Earth and Planetary Astrophysics · Physics 2014-09-24 Ronald-Louis Ballouz , Derek C Richardson , Patrick Michel , Stephen R. Schwartz , Yang Yu

We study the role of the pasta phases on the properties of rotating and magnetized neutron stars. In order to investigate such systems, we make use of two different relativistic mean-field unified inner-crust--core equations of state, with…

Nuclear Theory · Physics 2020-09-23 Ivo Sengo , Helena Pais , Bruno Franzon , Constança Providência

Mercury has an unusually large metal core comprising ~70% of its mass comparing to all other terrestrial planets in the solar system. Giant impacts can remove a significant fraction of the silicate mantle of a chondritic proto-Mercury and…

Earth and Planetary Astrophysics · Physics 2020-01-08 Hongping Deng

Advances in computing power and numerical methodologies over the past several decades sparked a prolific output of dynamical investigations of the late stages of terrestrial planet formation. Among other peculiar inner solar system…

Earth and Planetary Astrophysics · Physics 2022-10-12 Matthew S. Clement , Rogerio Deienno , Andre Izidoro

We advance a thermodynamically consistent model of self-gravitational accretion and differentiation in planets. The system is modeled in actual variables as a compressible thermoviscoelastic fluid in a fixed, sufficiently large domain. The…

Analysis of PDEs · Mathematics 2024-08-21 Tomas Roubicek , Ulisse Stefanelli

Neutron stars provide a unique opportunity to study strongly interacting matter under extreme density conditions. The intricacies of matter inside neutron stars and their equation of state are not directly visible, but determine bulk…

High Energy Astrophysical Phenomena · Physics 2024-09-04 Len Brandes , Chirag Modi , Aishik Ghosh , Delaney Farrell , Lee Lindblom , Lukas Heinrich , Andrew W. Steiner , Fridolin Weber , Daniel Whiteson

We calculate the total mass, radius, moment of inertia and surface gravitational redshift for neutron stars using various equations of state. The latter are derived from recent meson-exchange potential models, employing both a relativistic…

Nuclear Theory · Physics 2009-10-22 Bao , Engvik , Hjorth-Jensen , Osnes , Oestgaard

The symmetry energy effects on the location of the inner edge of neutron star crusts are studied. Three phenomenological models are employed in order to check the accuracy of the well known parabolic approximation of the equation of state…

Nuclear Theory · Physics 2012-06-22 Ch. C. Moustakidis

We ran several series of two-dimensional numerical mantle convection simulations representing in idealized form the thermochemical evolution of a Mars-like planet. In order to study the importance of compositional buoyancy of melting…

Earth and Planetary Astrophysics · Physics 2017-08-15 Thomas Ruedas , Doris Breuer

Venus' mass and radius are similar to those of Earth. However, dissimilarities in atmospheric properties, geophysical activity and magnetic field generation could hint towards significant differences in the chemical composition and interior…

Earth and Planetary Astrophysics · Physics 2021-12-10 Oliver Shah , Ravit Helled , Yann Alibert , Klaus Mezger
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