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For synthesising star clusters and whole galaxies, stellar populations need to be modelled by a set of four functions that define their initial distribution of stellar masses and of the orbital properties of their binary-star populations.…

Astrophysics of Galaxies · Physics 2025-04-29 Pavel Kroupa

Estimating the effect binarity can have on planet-formation is of crucial importance, as almost half of field stars reside in multiple systems. One effective way to assess this effect is to get an accurate picture of the population of…

Earth and Planetary Astrophysics · Physics 2025-08-13 Philippe Thebault , Danilo Bonanni

One promising way to extract information about stellar astrophysics from gravitational wave catalogs is to compare the catalog to the outputs of stellar population synthesis modeling with varying physical assumptions. The parameter space of…

High Energy Astrophysical Phenomena · Physics 2023-07-05 Kaze W. K. Wong , Katelyn Breivik , Will M. Farr , Rodrigo Luger

There are important but unresolved processes in the standard formation scenarios of double compact star binaries (DCBs; BH-BH, BH-NS, NS-NS systems), such as mass transfer and the common envelope (CE) phase. We analyze the effects of…

High Energy Astrophysical Phenomena · Physics 2018-10-29 Iminhaji Ablimit , Keiichi Maeda

Knowledge of the binary population in stellar groupings provides important information about the outcome of the star forming process in different environments (see, e.g., Blaauw 1991, and references therein). Binarity is also a key…

We compare the evolution of binary systems evolved in the MESA stellar evolution code to those in the COSMIC population synthesis code. Our aim is to convey the robustness of the equations that model binary evolution in the COSMIC code,…

High Energy Astrophysical Phenomena · Physics 2023-05-24 Lailani Kenoly , A. Ken Luu , Celia Toral , Roseanne M. Cheng , Nicole M. Lloyd-Ronning , Shane L. Larson , Gabriel O. Casabona

The properties of the population of merging binary black holes encode some of the uncertain physics of the evolution of massive stars in binaries. The binary black hole merger rate and chirp mass distribution are being measured by…

Bayesian predictive synthesis (BPS) provides a method for combining multiple predictive distributions based on agent/expert opinion analysis theory and encompasses a range of existing density forecast pooling methods. The key ingredient in…

Econometrics · Economics 2023-11-22 Tony Chernis , Niko Hauzenberger , Florian Huber , Gary Koop , James Mitchell

Population synthesis simulations of compact binary coalescences~(CBCs) play a crucial role in extracting astrophysical insights from an ensemble of gravitational wave~(GW) observations. However, realistic simulations can be costly to…

High Energy Astrophysical Phenomena · Physics 2025-09-04 Anarya Ray

Context: The dynamical evolution of binary populations in embedded star clusters shapes the statistical properties of binaries observed in the Galactic field. Accurately modelling this process requires resolving both early cluster dynamics…

Astrophysics of Galaxies · Physics 2026-02-03 Wenjie Wu , Pavel Kroupa , Vikrant V. Jadhav

We compare six popularly used evolutionary population synthesis (EPS) models (BC03, CB07, Ma05, GALEV, GRASIL, Vazdekis/Miles) through fitting the full optical spectra of six representative types of galaxies (star-forming and composite…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 X. Y. Chen , Y. C. Liang , F. Hammer , Ph. Prugniel , G. H. Zhong , M. Rodrigues , Y. H. Zhao , H. Flores

Binary stars undergo a variety of interactions and evolutionary phases, critical for predicting and explaining observed properties. Binary population synthesis with full stellar-structure and evolution simulations are computationally…

Bayesian modeling helps applied researchers articulate assumptions about their data and develop models tailored for specific applications. Thanks to good methods for approximate posterior inference, researchers can now easily build, use,…

Methodology · Statistics 2023-11-22 Gemma E. Moran , David M. Blei , Rajesh Ranganath

In recent years, research unveiled more and more evidence for the so-called Bayesian Brain Paradigm, i.e. the human brain is interpreted as a probabilistic inference machine and Bayesian modelling approaches are hence used successfully. One…

Neural and Evolutionary Computing · Computer Science 2019-04-30 Kevin Jasberg , Sergej Sizov

I present a simplified analytical model that simulates the evolution of the binary population in a dynamically evolving globular cluster. A number of simulations have been run spanning a wide range in initial cluster and environmental…

Astrophysics · Physics 2009-11-13 A. Sollima

The formation and evolution of binary stars is a critical component of several fields in astronomy. The most numerous sources for gravitational wave observatories are inspiraling and/or merging compact binaries, while binary stars are…

We perform binary population synthesis calculations to investigate the incidence of low-mass X-ray binaries and their birth rate in the Galaxy. We use a binary evolution algorithm that models all the relevant processes including tidal…

Astrophysics · Physics 2009-11-11 Paul D. Kiel , Jarrod R. Hurley

Understanding the multiplicity of stellar systems and the correlations between their hierarchical components provides crucial insights into star formation processes. If binary companions form independently in each component of a wide binary…

Solar and Stellar Astrophysics · Physics 2026-05-06 Dolev Bashi , Cathie J. Clarke , Vasily Belokurov

Studying the internal dynamics of stellar clusters is conducted primarily through N-Body simulations. One of the major inputs into N-Body simulations is the binary star frequency and mass distribution, which is currently constrained by…

Solar and Stellar Astrophysics · Physics 2015-11-17 Peter Frinchaboy , Benjamin Thompson

This paper studies the bounded confidence model on growing fully-mixed populations. In this model, in addition to the usual opinion clusters, significant secondary clusters of smaller size appear systematically, while those secondary…

Physics and Society · Physics 2024-02-20 Yérali Gandica , Guillaume Deffuant