2.4k citations · 3.7k across the 39 of their papers we have counts for
39 papers
Neutron Star Mass across Binary Pulsar Subpopulations: Mass-Spin Correlation, Mass Distributions, and Moment of Inertia Effects
Debatri Chattopadhyay
We present a hierarchical Bayesian analysis of the joint mass, spin, and orbital properties of Galactic binary radio pulsars with measured neutron star masses, classified…
Transitions in the Mass-ratio and Spin Properties of Binary Black Holes in GWTC-5
Elizabeth Flanagan, Fabio Antonini, Thomas Callister +4
We analyze the mass-ratio and effective-spin () distributions of binary black hole mergers in the latest gravitational-wave catalog, GWTC-5, as a function of primary m…
Repopulating the pair-instability mass gap without sustained growth to massive IMBHs: the case of 47\,Tuc
Debatri Chattopadhyay, Daniel Marín Pina, Mark Gieles +2
We model the formation and retention of the most massive black hole (BH) in 47~Tuc using the semi-analytical code \texttt{cBHBd}, coupling cluster evolution with binary BH dynamics…
Modelling Millisecond Pulsar Populations in Globular Clusters with NBODY6++GPU
Yuzhe Song, Debatri Chattopadhyay, Jarrod Hurley +3
Millisecond pulsars (MSPs) are neutron stars with spin periods as short as a few milliseconds, formed through mass accretion from companion stars. In the dense environments of glob…
Modelling the Future of Gaia Neutron Star-Main Sequence Binaries: From Eccentric Orbits to Millisecond Pulsar-White Dwarfs
Debatri Chattopadhyay, Kyle A. Rocha, Seth Gossage +3
We model the evolution of 21 Gaia neutron star (NS)-main-sequence binaries (orbital period -- days, eccentricity ) using binary evolutio…
Evolutionary Links: From Gaia Neutron Star Binaries to Pulsar White Dwarf Endpoints
Debatri Chattopadhyay, Kyle A. Rocha, Seth Gossage +1
The discovery of wide, eccentric Gaia neutron stars (NSs) in binaries with still evolving (likely main sequence) companions offers a new probe of mass transfer and pulsar recycling…
Gravitational-wave constraints on the pair-instability mass gap and nuclear burning in massive stars
Fabio Antonini, Isobel Romero-Shaw, Thomas Callister +5
Pair-instability should prevent the direct formation of black holes above about creating a pair-instability mass gap. Yet gravitational-wave observations have detected…
Forming Double Neutron Stars using Detailed Binary Evolution Models with POSYDON: Comparison to the Galactic Systems
Abhishek Chattaraj, Jeff J. Andrews, Simone S. Bavera +14
With over two dozen detections in the Milky Way, double neutron stars (DNSs) provide a unique window into massive binary evolution. We use the POSYDON binary population synthesis c…
Inferring the pair-instability mass gap from gravitational wave data
Fabio Antonini, Thomas Callister, Fani Dosopoulou +2
We use hierarchical Bayesian inference with non-parametric Gaussian process models to investigate the effective inspiral spin parameter, , as a function of primary bla…
Possible binary neutron star merger history of the primary of GW230529
Parthapratim Mahapatra, Debatri Chattopadhyay, Anuradha Gupta +4
Black holes (BHs) with masses between , produced by a binary neutron star (BNS) merger, can further pair up with a neutron star or BH and merge again within a Hu…
Properties of black hole-star binaries formed in -body simulations of massive star clusters: implications for Gaia black holes
Federico Fantoccoli, Jordan Barber, Fani Dosopoulou +2
We investigate black hole-star binaries formed in -body simulations of massive, dense star clusters. We simulate 32 clusters with varying initial masses (…
The Impact of Astrophysical Priors on Parameter Inference for GW230529
Debatri Chattopadhyay, Sama Al-Shammari, Fabio Antonini +3
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 motiv…
Binary population synthesis of the Galactic canonical pulsar population
Yuzhe Song, Simon Stevenson, Debatri Chattopadhyay +2
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 COM…
Reconstructing the Genealogy of LIGO-Virgo Black Holes
Parthapratim Mahapatra, Debatri Chattopadhyay, Anuradha Gupta +4
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 t…
Everything everywhere all at once: A detailed study of GW230529
Koustav Chandra, Ish Gupta, Rossella Gamba +5
This study investigates the origins of GW230529, delving into its formation from massive stars within isolated binary systems. Utilizing population synthesis models, we present com…
Observation of Gravitational Waves from the Coalescence of a Compact Object and a Neutron Star
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1793
We report the observation of a coalescing compact binary with component masses and (all measurements quoted at the 90% credible le…
Black hole binary mergers in dense star clusters: the importance of primordial binaries
Jordan Barber, Debatri Chattopadhyay, Fabio Antonini
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…
Double black hole mergers in nuclear star clusters: eccentricities, spins, masses, and the growth of massive seeds
Debatri Chattopadhyay, Jakob Stegmann, Fabio Antonini +2
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…
Binary neutron star populations in the Milky Way
Cecilia Sgalletta, Giuliano Iorio, Michela Mapelli +7
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…
Neutron star-black hole mergers in next generation gravitational-wave observatories
Ish Gupta, Ssohrab Borhanian, Arnab Dhani +4
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 me…
Predictions of a simple parametric model of hierarchical black hole mergers
Parthapratim Mahapatra, Debatri Chattopadhyay, Anuradha Gupta +3
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_{\odo…
Coalescing black hole binaries from globular clusters: mass distributions and comparison to gravitational wave data from GWTC-3
Fabio Antonini, Mark Gieles, Fani Dosopoulou +1
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 ef…
Black hole - black hole total merger mass and the origin of LIGO/Virgo sources
K. Belczynski, Z. Doctor, M. Zevin +3
The LIGO-Virgo-KAGRA (LVK) Collaboration has reported nearly 100 BH-BH mergers. The LVK provides estimates of rates, masses, effective spins, and redshifts for these mergers. Yet,…
Binary black hole mergers from merged stars in the Galactic field
Jakob Stegmann, Fabio Antonini, Fabian R. N. Schneider +2
The majority of massive stars are found in close binaries which: (i) are prone to merge and (ii) are accompanied by another distant tertiary star (triples). Here, we study the evol…