247 citations · 884 across the 25 of their papers we have counts for
26 papers
Search for Compact Binary Coalescences with Sub-solar Mass Components in Data from the Second Part of LIGO-Virgo-KAGRA's Fourth Observing Run
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1816
We report on a gravitational wave search for compact binary coalescences with secondary mass between 0.2 M and 1 M and primary mass between 0.2 M and 10 M, restricting the componen…
Magnetized neutron stars: perturbative versus fully-numerical approaches
Debarati Chatterjee, Daw Guttmann, Jérôme Novak +2
(1) Background: for the study of highly magnetized neutron stars observed as magnetars, and to quantify the effect of this intense magnetic field onto the star's structure and shap…
GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-Spin Black Hole Coalescence
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1783
We report the observation of gravitational waves from two binary black hole coalescences during the fourth observing run of the LIGO--Virgo--KAGRA detector network, GW241011 and GW…
-mode Oscillations for Hyperons and H-dibaryons in Neutron Stars
Rajesh Maiti, Jesper Leong, Debarati Chatterjee +1
The fundamental (-mode) oscillations of neutron stars are studied within the quark meson coupling model, a relativistic Hartree-Fock theory of dense nuclear matter, which takes…
PSR J0614-3329: A NICER case for Strange Quark Stars
Swarnim Shirke, Rajesh Maiti, Debarati Chatterjee
Precise measurements of neutron star masses and radii by the NICER mission impose important constraints on the nuclear equation of state. The most recent NICER measurement of PSR J…
-mode oscillations of dark matter admixed neutron stars
Swarnim Shirke, Debarati Chatterjee, Prashanth Jaikumar
We investigate -mode oscillations in dark matter admixed neutron stars employing a relativistic mean field model to describe hadronic matter and a model for self-interacting fer…
-mode oscillations in hot Neutron Stars: Effect of hyperons and neutrino trapping
Nilaksha Barman, Debarati Chatterjee
In this work, we present an equation of state formalism for hot Neutron Stars (NSs) which consistently includes the effects of finite temperature, hyperons as well as neutrino trap…
Tidal heating in binary inspiral of strange quark stars
Suprovo Ghosh, José Luis Hernández, Bikram Keshari Pradhan +3
We investigate tidal heating associated with the binary inspiral of strange quark stars and its impact on the resulting gravitational wave signal. Tidal heating during the merger o…
Detectability of Massive Boson Stars using Gravitational Waves from Fundamental Oscillations
Swarnim Shirke, Bikram Keshari Pradhan, Debarati Chatterjee +2
Boson Stars are macroscopic self-gravitating configurations made of complex scalar fields. These exotic compact objects would manifest as dark Boson stars and, in the absence of el…
Fundamental oscillations as a tool to distinguish boson stars from neutron stars and black holes
Swarnim Shirke, Bikram Keshari Pradhan, Debarati Chatterjee +2
Massive boson stars are self-gravitating configurations of self-interacting scalar fields and can be modeled by a massive scalar field with a quartic self-interaction potential. It…
Investigating the role of nuclear parameters in Neutron Star oscillations: a model comparison
Rajesh Maiti, Debarati Chatterjee
Recent studies based on the relativistic mean field (RMF) model found certain nuclear empirical parameters, in particular the nucleon effective mass, to be strongly correlated with…
Investigating the role of nuclear parameters on oscillation modes in hot Neutron Stars
Nilaksha Barman, Bikram Keshari Pradhan, Debarati Chatterjee
Recent studies have revealed that certain nuclear parameters are more dominant than others in governing global neutron star properties, such as its structure or oscillation mode ch…
Can the second time-derivative of the orbital frequency of binary pulsars be used for testing general relativity?
Dhruv Pathak, Debarati Chatterjee
With precision pulsar timing, measured values of a large set of pulsar parameters are obtainable. For some of those parameters, such as the time-derivatives of spin or orbital peri…
Effects of Dark Matter on -mode oscillations of Neutron Stars
Swarnim Shirke, Bikram Keshari Pradhan, Debarati Chatterjee +2
The effect of dark matter (DM) on -mode oscillations in DM admixed neutron stars (NSs) is investigated in a comprehensive analysis with particular attention to the role of the n…
Prospects of identifying the presence of Strange Stars using Gravitational Waves from binary systems
Bikram Keshari Pradhan, Swarnim Shirke, Debarati Chatterjee
The existence of self-bound strange stars is a long-standing mystery in astrophysics. Future astrophysical data, even with improved precision, may not allow us to discriminate them…
Cost of inferred nuclear parameters towards the f-mode dynamical tide in binary neutron stars
Bikram Keshari Pradhan, Tathagata Ghosh, Dhruv Pathak +1
Gravitational Wave (GW) observations from Neutron Stars (NS) in a binary system provide an excellent scenario to constrain the nuclear parameters. The investigation of Pratten et a…
Probing hadron-quark phase transition in twin stars using -modes
Bikram Keshari Pradhan, Debarati Chatterjee, David Edwin Alvarez-Castillo
Although it is conjectured that a phase transition from hadronic to deconfined quark matter in the ultrahigh-density environment of Neutron Stars (NS), the nature of phase transiti…
Improving the spin-down limits of the continuous gravitational waves emitted from rotating triaxial pulsars
Dhruv Pathak, Debarati Chatterjee
The spin-down limit of the continuous gravitational wave strain from pulsars assumed to be triaxial stars rotating about a principal moment of inertia axis depends upon the value o…
Model-based cross-correlation search for gravitational waves from the low-mass X-ray binary Scorpius X-1 in LIGO O3 data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1692
We present the results of a model-based search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1 using LIGO detector data from the third observing run…
Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO--Virgo data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1667
We present a directed search for continuous gravitational wave (CW) signals emitted by spinning neutron stars located in the inner parsecs of the Galactic Center (GC). Compelling e…
Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1669
Results are presented for a semi-coherent search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1, using a hidden Markov model (HMM) to allow for spin…
Narrowband searches for continuous and long-duration transient gravitational waves from known pulsars in the LIGO-Virgo third observing run
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1658
Isolated neutron stars that are asymmetric with respect to their spin axis are possible sources of detectable continuous gravitational waves. This paper presents a fully-coherent s…
Tests of General Relativity with GWTC-3
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1682
The ever-increasing number of detections of gravitational waves (GWs) from compact binaries by the Advanced LIGO and Advanced Virgo detectors allows us to perform ever-more sensiti…
Constraints on the cosmic expansion history from GWTC-3
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1676
We use 47 gravitational-wave sources from the Third LIGO-Virgo-KAGRA Gravitational-Wave Transient Catalog (GWTC-3) to estimate the Hubble parameter , including its current va…