Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Chattopadhyay, Debatri"'
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:
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
Pulsars are rapidly rotating neutron stars that emit radiation across the electromagnetic spectrum, from radio to gamma-rays. We use the rapid binary population synthesis suite COMPAS to model the Galactic population of canonical pulsars. We account
Externí odkaz:
http://arxiv.org/abs/2406.11428
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:
Chandra, Koustav, Gupta, Ish, Gamba, Rossella, Kashyap, Rahul, Chattopadhyay, Debatri, Gonzalez, Alejandra, Bernuzzi, Sebastiano, Sathyaprakash, B. S.
This study investigates the origins of GW230529, delving into its formation from massive stars within isolated binary systems. Utilizing population synthesis models, we present compelling evidence that the neutron star component forms second. However
Externí odkaz:
http://arxiv.org/abs/2405.03841
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
Autor:
Sgalletta, Cecilia, Iorio, Giuliano, Mapelli, Michela, Artale, M. Celeste, Boco, Lumen, Chattopadhyay, Debatri, Lapi, Andrea, Possenti, Andrea, Rinaldi, Stefano, Spera, Mario
Galactic binary neutron stars (BNSs) are a unique laboratory to probe the evolution of BNSs and their progenitors. Here, we use a new version of the population synthesis code SEVN to evolve the population of Galactic BNSs, by modeling the spin up and
Externí odkaz:
http://arxiv.org/abs/2305.04955
Autor:
Gupta, Ish, Borhanian, Ssohrab, Dhani, Arnab, Chattopadhyay, Debatri, Kashyap, Rahul, Villar, V. Ashley, Sathyaprakash, B. S.
Publikováno v:
Phys. Rev. D 107, 124007 (2023)
Observations by the current generation of gravitational-wave detectors have been pivotal in expanding our understanding of the universe. Although tens of exciting compact binary mergers have been observed, neutron star-black hole (NSBH) mergers remai
Externí odkaz:
http://arxiv.org/abs/2301.08763
Autor:
Mahapatra, Parthapratim, Chattopadhyay, Debatri, Gupta, Anuradha, Favata, Marc, Sathyaprakash, B. S., Arun, K. G.
Hierarchical mergers of black holes are proposed as a mechanism to explain the observations of binary black holes with component masses between $\sim 50M_{\odot}\hbox{--}130M_{\odot}$ by LIGO/Virgo, often referred to as "upper mass gap". We study the
Externí odkaz:
http://arxiv.org/abs/2209.05766