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Population inference of gravitational-wave catalogues is a useful tool to translate observations of black-hole mergers into constraints on compact-binary formation. Different formation channels predict identifiable signatures in the…

High Energy Astrophysical Phenomena · Physics 2022-10-20 Matthew Mould , Davide Gerosa , Floor S. Broekgaarden , Nathan Steinle

Stripped-envelope supernovae (SESNe) mark the deaths of massive stars without hydrogen-rich envelopes. Most SESNe likely originate from binary systems where a companion stripped the progenitor of its envelope. Years of HST imaging of nearby…

The evolution of massive stars in general, massive close binaries in particular depend on processes where, despite many efforts, the physics are still uncertain. Here we discuss the effects of stellar wind as function of metallicity during…

Astrophysics · Physics 2007-05-23 D. Vanbeveren

In this chapter we discuss the population and spectral synthesis of stellar populations. We describe the method required to achieve such synthesis and discuss examples where inclusion of interacting binaries are vital to reproducing the…

Solar and Stellar Astrophysics · Physics 2020-06-15 J. J. Eldridge , Elizabeth R. Stanway

In large and complicated stellar systems like galaxies it is difficult to predict the number and characteristics of a black hole population. Such populations may be modelled as an aggregation of homogeneous (i.e. having uniform star…

High Energy Astrophysical Phenomena · Physics 2019-11-06 Grzegorz Wiktorowicz , Łukasz Wyrzykowski , Martyna Chruslinska , Jakub Klencki , Krzysztof A. Rybicki , Krzysztof Belczynski

We model explosions driven by the coalescence of a black hole or neutron star with the core of its massive-star companion. Upon entering a common envelope phase, a compact object may spiral all the way to the core. The concurrent release of…

High Energy Astrophysical Phenomena · Physics 2020-03-25 Sophie Lund Schrøder , Morgan MacLeod , Abraham Loeb , Alejandro Vigna-Gómez , Ilya Mandel

Theoretical modeling of massive stars predicts a gap in the black hole (BH) mass function above $\sim 40-50\,M_{\odot}$ for BHs formed through single star evolution, arising from (pulsational) pair-instability supernovae. However, in dense…

The progenitors of core-collapse supernovae are stars with an initial mass greater than about 8M(sun). Understanding the evolution of these stars is necessary to comprehend the evolution and differences between supernovae. We have…

Astrophysics · Physics 2007-05-23 John J. Eldridge

We first give a short historical overview with some key facts of massive star population synthesis with binaries. We then discuss binary population codes and focus on two ingredients which are important for massive star population synthesis…

Solar and Stellar Astrophysics · Physics 2015-08-19 D. Vanbeveren , N. Mennekens

The Collapsar model, in which a massive star (greater than 20 solar masses) fails to produce a SN and forms a BH, provides the main framework for understanding long Gamma-Ray Bursts (GRB) and the accompanying hypernovae (HN). However,…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Enrique Moreno Mendez

Gravitational-wave detections have revealed a previously unknown population of stellar mass black holes with masses above $20\, M_{\odot}$. These observations provide a new way to test models of stellar evolution for massive stars. By…

High Energy Astrophysical Phenomena · Physics 2018-04-25 Colm Talbot , Eric Thrane

When modeling the population of merging binary black holes, analyses have generally focused on characterizing the distribution of primary (i.e. more massive) black holes in the binary, while simplistic prescriptions are used for the…

High Energy Astrophysical Phenomena · Physics 2024-09-02 Amanda M. Farah , Maya Fishbach , Daniel E. Holz

Modeling binary star populations is critical to linking the theories of star formation and stellar evolution with observations. In order to test these theories, we need accurate models of observable binary populations. The Kepler Eclipsing…

Solar and Stellar Astrophysics · Physics 2021-03-24 Mark Wells , Andrej Prša

The growing catalog of gravitational-wave detections from the LIGO-Virgo-KAGRA (LVK) collaboration reveals structure in the binary black hole (BBH) mass distribution, including peaks near m1 = 10 solar masses and m1 = 35 solar masses, a…

High Energy Astrophysical Phenomena · Physics 2026-05-26 Shanika Galaudage

In isolated binary evolution, binary black hole (BBH) mergers are generally formed through stable mass transfer (SMT) or common envelope evolution. In recent years, the SMT channel has received significant attention due to detailed binary…

Using axisymmetric simulations coupling special relativistic MHD, an approximate post-Newtonian gravitational potential and two-moment neutrino transport, we show different paths for the formation of either protomagnetars or stellar mass…

Solar and Stellar Astrophysics · Physics 2017-05-09 Martin Obergaulinger , Miguel-Ángel Aloy

We conduct a population synthesis study using the binary population synthesis code compas to explore the formation of circumbinary disks (CBDs) following the common envelope evolution (CEE) phase of a giant star and a neutron star (NS) or…

Solar and Stellar Astrophysics · Physics 2026-01-19 Lotem Unger , Aldana Grichener , Noam Soker

Gravitational waves (GWs) from binary black hole (BBH) mergers provide a new probe of massive-star evolution and the formation channels of binary compact objects. By coupling the growing sample of BBH systems with population synthesis…

High Energy Astrophysical Phenomena · Physics 2017-09-11 Michael Zevin , Chris Pankow , Carl L. Rodriguez , Laura Sampson , Eve Chase , Vassiliki Kalogera , Frederic A. Rasio

In this paper, the second of a series, we study the stellar dynamical and evolutionary processes leading to the formation of compact binaries containing neutron stars (NSs) in dense globular clusters (GCs). For this study, 70 dense clusters…

Astrophysics · Physics 2009-11-13 N. Ivanova , C. Heinke , F. A. Rasio , K. Belczynski , J. Fregeau

We perform a hierarchical Bayesian inference to investigate the population properties of the coalescing compact binaries involving at least one neutron star (NS). With the current observation data, we can not rule out either of the Double…

High Energy Astrophysical Phenomena · Physics 2021-12-22 Yin-Jie Li , Shao-Peng Tang , Yuan-Zhu Wang , Qiang Yuan , Yi-Zhong Fan , Da-Ming Wei
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