Zobrazeno 1 - 10
of 186
pro vyhledávání: '"Antonini, Fabio"'
Autor:
Fantoccoli, Federico, Barber, Jordan, Dosopoulou, Fani, Chattopadhyay, Debatri, Antonini, Fabio
We investigate black hole-star binaries formed in $N$-body simulations of massive, dense star clusters. We simulate 32 clusters with varying initial masses ($10^{4}~\rm M_{\odot}$ to $10^{6}~\rm M_{\odot}$), densities ($1200~\rm M_{\odot}~pc^{-3}$ to
Externí odkaz:
http://arxiv.org/abs/2410.17323
Autor:
Barber, Jordan, Antonini, Fabio
Understanding binary black hole (BBH) dynamics in dense star clusters is key to interpreting the gravitational wave detections by LIGO and Virgo. Here, we perform $N$-body simulations of star clusters, focusing on BBH formation mechanisms, dynamical
Externí odkaz:
http://arxiv.org/abs/2410.03832
Autor:
Chattopadhyay, Debatri, Al-Shammari, Sama, Antonini, Fabio, Fairhurst, Stephen, Miles, Benjamin, Raymond, Vivien
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters (2024), 536, L19
We investigate the effects of prior selection on the inferred mass and spin parameters of the neutron star-black hole merger GW230529\_181500. Specifically, we explore models motivated by astrophysical considerations, including massive binary and pul
Externí odkaz:
http://arxiv.org/abs/2407.08719
Stellar evolution theories predict a gap in the black hole birth mass spectrum as the result of pair instability processes in the cores of massive stars.This gap, however, is not seen in the binary black hole masses inferred from gravitational wave d
Externí odkaz:
http://arxiv.org/abs/2406.19044
Autor:
Mahapatra, Parthapratim, Chattopadhyay, Debatri, Gupta, Anuradha, Antonini, Fabio, Favata, Marc, Sathyaprakash, B. S., Arun, K. G.
Publikováno v:
ApJ 975 117 (2024)
We propose a Bayesian inference framework to predict the merger history of LIGO-Virgo binary black holes (BHs), whose binary components may have undergone hierarchical mergers in the past. The framework relies on numerical relativity predictions for
Externí odkaz:
http://arxiv.org/abs/2406.06390
Autor:
Forastier, Bruno Rando, Pina, Daniel Marín, Gieles, Mark, Zwart, Simon Portegies, Antonini, Fabio
Dynamical interactions in star clusters are an efficient mechanism to produce the coalescing binary black holes (BBHs) that have been detected with gravitational waves (GWs). We want to understand how BBH coalescence can occur during - or after - bin
Externí odkaz:
http://arxiv.org/abs/2405.16999
The most massive black holes in our Universe form binaries at the centre of merging galaxies. The recent evidence for a gravitational-wave (GW) background from pulsar timing may constitute the first observation that these supermassive black hole bina
Externí odkaz:
http://arxiv.org/abs/2311.06335
Dense stellar clusters are expected to house the ideal conditions for binary black hole (BBH) formation, both through binary stellar evolution and through dynamical encounters. We use theoretical arguments as well as $N$-body simulations to make pred
Externí odkaz:
http://arxiv.org/abs/2310.02376
Autor:
Chattopadhyay, Debatri, Stegmann, Jakob, Antonini, Fabio, Barber, Jordan, Romero-Shaw, Isobel M.
We investigate the formation of intermediate mass black holes (IMBHs) through hierarchical mergers of stellar origin black holes (BHs), as well as BH mergers formed dynamically in nuclear star clusters. Using a semi-analytical approach which incorpor
Externí odkaz:
http://arxiv.org/abs/2308.10884
We use our cluster population model, cBHBd, to explore the mass distribution of merging black hole binaries formed dynamically in globular clusters. We include in our models the effect of mass growth through hierarchical mergers and compare the resul
Externí odkaz:
http://arxiv.org/abs/2208.01081