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Most stars form in star clusters and stellar associated. To understand the roles of star cluster environments in shaping the dynamical evolution of planetary systems, we carry out direct $N$-body simulations of four planetary systems models…

Earth and Planetary Astrophysics · Physics 2017-06-15 Maxwell Xu Cai , M. B. N. Kouwenhoven , Simon F. Portegies Zwart , Rainer Spurzem

N-body numerical simulations code for the orbital motion of asteroids/planetesimals within the asteroid belt under the gravitational influence of the sun and the accreting planets has been developed. The aim is to make qualitative, and to…

Earth and Planetary Astrophysics · Physics 2023-08-09 Sandeep Sahijpal

Solar system small bodies come in a wide variety of shapes and sizes, which are achieved following very individual evolutional paths through billions of years. This paper focuses on the reshaping process of rubble-pile asteroids driven by…

Earth and Planetary Astrophysics · Physics 2017-08-03 Yang Yu , Derek C. Richardson , Patrick Michel

For the early identification, diagnosis, and treatment of mental health illnesses, the integration of deep learning (DL) and machine learning (ML) has started playing a significant role. By evaluating complex data from imaging, genetics,…

We examine the physical basis for algorithms to replace mixing-length theory (MLT) in stellar evolutionary computations. Our 321D procedure is based on numerical solutions of the Navier-Stokes equations. These implicit large eddy…

Solar and Stellar Astrophysics · Physics 2015-08-19 W. David Arnett , Casey Meakin , Maxime Viallet , Simon W. Campbell , John Lattanzio , Miroslav Mocák

The standard formation model of close-in low-mass planets involves efficient inward migration followed by growth through giant impacts after the protoplanetary gas disk disperses. While detailed N-body simulations have enhanced our…

Earth and Planetary Astrophysics · Physics 2025-07-08 Tadahiro Kimura , Eiichiro Kokubo , Yuji Matsumoto , Christoph Mordasini , Masahiro Ikoma

We have conducted a detailed simulation of LSST's ability to link near-Earth and main belt asteroid detections into orbits. The key elements of the study were a high-fidelity detection model and the presence of false detections in the form…

Earth and Planetary Astrophysics · Physics 2017-06-30 Peter Vereš , Steven R. Chesley

Although planets have been found orbiting binary systems, whether they can survive binary interactions is debated. While the tightest-orbit binaries should host the most dynamically stable and long-lived circumbinary planetary systems, they…

Earth and Planetary Astrophysics · Physics 2024-10-28 Zepei Xing , Santiago Torres , Ylva Götberg , Alessandro A. Trani , Valeriya Korol , Jorge Cuadra

The observational census of trans-Neptunian objects with semi-major axes greater than ~250 AU exhibits unexpected orbital structure that is most readily attributed to gravitational perturbations induced by a yet-undetected, massive planet.…

Earth and Planetary Astrophysics · Physics 2017-11-29 Konstantin Batygin , Alessandro Morbidelli

The catalog of km-sized near-Earth objects (NEOs) is nearly complete. Typical impact monitoring analyses search for possible impacts over the next 100 years and none of the km-sized objects represent an impact threat over that time…

Earth and Planetary Astrophysics · Physics 2023-06-28 Oscar Fuentes-Muñoz , Daniel J. Scheeres , Davide Farnocchia , Ryan S. Park

The asteroidal main belt is crossed by a web of mean-motion and secular resonances, that occur when there is a commensurability between fundamental frequencies of the asteroids and planets. Traditionally, these objects were identified by…

Earth and Planetary Astrophysics · Physics 2023-03-29 Valerio Carruba , Safwan Aljbaae , Gabriel Caritá , Rita Cassia Domingos , Bruno Martins

This paper examines two different yet related questions related to explainable AI (XAI) practices. Machine learning (ML) is increasingly important in financial services, such as pre-approval, credit underwriting, investments, and various…

Machine Learning · Computer Science 2022-09-21 Swati Tyagi

Merging galaxy clusters have become one of the most important probes of dark matter, providing evidence for dark matter over modified gravity and even constraints on the dark matter self-interaction cross-section. To properly constrain the…

Cosmology and Nongalactic Astrophysics · Physics 2013-07-23 William A. Dawson

Mergers are an important aspect of galaxy formation and evolution. We aim to test whether deep learning techniques can be used to reproduce visual classification of observations, physical classification of simulations and highlight any…

Astrophysics of Galaxies · Physics 2019-06-12 W. J. Pearson , L. Wang , J. W. Trayford , C. E. Petrillo , F. F. S. van der Tak

Dynamical systems theory has long provided a foundation for understanding evolving phenomena across scientific domains. Yet, the application of this theory to complex real-world systems remains challenging due to issues in mathematical…

Machine Learning · Computer Science 2024-11-05 Samuel A. Moore , Brian P. Mann , Boyuan Chen

Molecular dynamics simulations are a cornerstone in science, allowing to investigate from the system's thermodynamics to analyse intricate molecular interactions. In general, to create extended molecular trajectories can be a…

Computational Physics · Physics 2022-06-22 Ludwig Winkler , Klaus-Robert Müller , Huziel E. Sauceda

The presence of mean motion resonances (MMRs) complicates analysis and fitting of planetary systems observed through the radial velocity (RV) technique. MMR can allow planets to remain stable in regions of phase space where strong…

Earth and Planetary Astrophysics · Physics 2019-09-25 M. M. Rosenthal , W. Jacobson-Galan , B. Nelson , R. A. Murray-Clay , J. A. Burt , B. Holden , E. Chang , N. Kaaz , J. Yant , R. P. Butler , S. S. Vogt

Hybrid symplectic integrators such as MERCURY are widely used to simulate complex dynamical phenomena in planetary dynamics that could otherwise not be investigated. A hybrid integrator achieves high accuracy during close encounters by…

Earth and Planetary Astrophysics · Physics 2019-03-18 Hanno Rein , David M. Hernandez , Daniel Tamayo , Garett Brown , Emily Eckels , Emma Holmes , Michelle Lau , Rejean Leblanc , Ari Silburt

The Medium Earth Orbit (MEO) region hosts satellites for navigation, communication, and geodetic/space environmental science, among which are the Global Navigation Satellites Systems (GNSS). Safe and efficient removal of debris from MEO is…

Earth and Planetary Astrophysics · Physics 2019-04-12 Despoina K. Skoulidou , Aaron J. Rosengren , Kleomenis Tsiganis , George Voyatzis

The organization of the orbits of most minor bodies in the Solar system seems to follow random patterns, the result of billions of years of chaotic dynamical evolution. Much as heterogeneous orbital behaviour is ubiquitous, dynamically…

Earth and Planetary Astrophysics · Physics 2017-12-08 C. de la Fuente Marcos , R. de la Fuente Marcos