130 citations · 430 across the 23 of their papers we have counts for
24 papers
Rapid inference of gravitational-wave signals in the time domain using a heterodyned likelihood
Neha Sharma, Aditya Vijaykumar, Prayush Kumar
Parameter estimation of gravitational wave signals is computationally intensive and typically requires millions of likelihood evaluations to construct posterior probability distrib…
Implications of GW241011 for rotating exotic compact objects
N. V. Krishnendu, Tamara Evstafyeva, Aditya Vijaykumar +17
A number of theoretical proposals have been made for horizonless compact objects with masses and spins similar to those of black holes. While gravitational wave signatures from the…
Profiling Dark Matter Spikes with Gravitational Waves from Accelerated Binaries
Avinash Tiwari, Prolay Chanda, Shasvath J. Kapadia +3
Dark matter halos can develop a density spike, e.g., around a galactic supermassive black hole, with the profile determined both by the galaxy's formatio…
Inference with finite time series II: the window strikes back
Colm Talbot, Sylvia Biscoveanu, Aaron Zimmerman +9
Smooth window functions are often applied to strain data when inferring the parameters describing the astrophysical sources of gravitational-wave transients. Within the LIGO-Virgo-…
Hierarchical Triples vs. Globular Clusters: Binary black hole merger eccentricity distributions compete and evolve with redshift
Andris Dorozsmai, Isobel M. Romero-Shaw, Aditya Vijaykumar +5
The formation mechanisms of merging binary black holes (BBHs) observed by the LIGO-Virgo-KAGRA collaboration remain uncertain. Detectable eccentricity provides a powerful diagnosti…
A pipeline to search for signatures of line-of-sight acceleration in gravitational wave signals produced by compact binary coalescences
Avinash Tiwari, Aditya Vijaykumar, Shasvath J. Kapadia +2
Compact binary coalescences (CBCs), such as merging binary black holes (BBHs), binary neutron stars (BNSs), or neutron star black holes (NSBHs), hosted by dense stellar environment…
Assessing the potential of LIGO-India in resolving the Hubble tension
Kanchan Soni, Aditya Vijaykumar, Sanjit Mitra
Conclusive determination of the Hubble constant () is a major challenge in current astronomy due to the observed discrepancies between early and late universe measurements. Jo…
Profiling stellar environments of gravitational wave sources
Avinash Tiwari, Aditya Vijaykumar, Shasvath J. Kapadia +2
Gravitational waves (GWs) have enabled direct detections of compact binary coalescences (CBCs). However, their poor sky localisation and the typical lack of observable electromagne…
Gravitational-wave dark siren cosmology systematics from galaxy weighting
Alexandra G. Hanselman, Aditya Vijaykumar, Maya Fishbach +1
The detection of GW170817 and the measurement of its redshift from the associated electromagnetic counterpart provided the first gravitational wave determination of the Hubble cons…
Bounds on the charge of the graviton using gravitational wave observations
Sreejith Nair, Aditya Vijaykumar, Sudipta Sarkar
If the graviton possesses a non-zero charge , gravitational waves (GW) originating from astrophysical sources would experience an additional time delay due to intergalactic ma…
Consistent eccentricities for gravitational wave astronomy: Resolving discrepancies between astrophysical simulations and waveform models
Aditya Vijaykumar, Alexandra G. Hanselman, Michael Zevin
Detecting imprints of orbital eccentricity in GW signals promises to shed light on the formation mechanisms of binary black holes. To constrain formation mechanisms, distributions…
Impact of higher harmonics of gravitational radiation on the population inference of binary black holes
Mukesh Kumar Singh, Shasvath J Kapadia, Aditya Vijaykumar +1
Templates modeling just the dominant mode of gravitational radiation are generally sufficient for the unbiased parameter inference of near-equal-mass compact binary mergers. Howeve…
Inferring host-galaxy properties of LIGO-Virgo-KAGRA's black holes
Aditya Vijaykumar, Maya Fishbach, Susmita Adhikari +1
Observations of gravitational waves from binary black hole (BBH) mergers have measured the redshift evolution of the BBH merger rate. The number density of galaxies in the Universe…
Effect of double spin-precession and higher harmonics on spin-induced quadrupole moment measurements
Divyajyoti, N. V. Krishnendu, Muhammed Saleem +4
We investigate the prospect of performing a null test of binary black hole (BBH) nature using spin-induced quadrupole moment (SIQM) measurements. This is achieved by constraining a…
Accelerated binary black holes in globular clusters: forecasts and detectability in the era of space-based gravitational-wave detectors
Avinash Tiwari, Aditya Vijaykumar, Shasvath J. Kapadia +2
The motion of the center of mass of a coalescing binary black hole (BBH) in a gravitational potential imprints a line-of-sight acceleration (LOSA) onto the emitted gravitational wa…
Waltzing binaries: Probing line-of-sight acceleration of merging compact objects with gravitational waves
Aditya Vijaykumar, Avinash Tiwari, Shasvath J. Kapadia +2
Line-of-sight acceleration of a compact binary coalescence (CBC) event would modulate the shape of the gravitational waves (GWs) it produces with respect to the corresponding non-a…
Rapid Identification and Classification of Eccentric Gravitational Wave Inspirals with Machine Learning
Adhrit Ravichandran, Aditya Vijaykumar, Shasvath J. Kapadia +1
Current templated searches for gravitational waves (GWs) emanated from compact binary coalescences (CBCs) assume that the binaries have circularized by the time they enter the sens…
Probing lens-induced gravitational-wave birefringence as a test of general relativity
Srashti Goyal, Aditya Vijaykumar, Jose Maria Ezquiaga +1
Theories beyond general relativity (GR) modify the propagation of gravitational waves (GWs). In some, inhomogeneities (aka. gravitational lenses) allow interactions between the met…
Impact of updated Multipole Love numbers and f-Love Universal Relations in the context of Binary Neutron Stars
Bikram Keshari Pradhan, Aditya Vijaykumar, Debarati Chatterjee
Neutron star (NS) equation of state (EoS) insensitive relations or universal relations (UR) involving neutron star bulk properties play a crucial role in gravitational-wave astrono…
Can a binary neutron star merger in the vicinity of a supermassive black hole enable a detection of a post-merger gravitational wave signal?
Aditya Vijaykumar, Shasvath J. Kapadia, Parameswaran Ajith
The postmerger gravitational-wave (GW) signal of a binary neutron star (BNS) merger is expected to contain valuable information that could shed light on the equation of state (EOS)…
Detecting Baryon Acoustic Oscillations with third generation gravitational wave observatories
Sumit Kumar, Aditya Vijaykumar, Alexander H. Nitz
We explore the possibility of detecting Baryon Acoustic Oscillations (BAO) solely from gravitational wave observations of binary neutron star mergers with third generation (3G) gra…
The Science Case for LIGO-India
M. Saleem, Javed Rana, V. Gayathri +12
The global network of gravitational-wave detectors has completed three observing runs with detections of merging compact binaries. A third LIGO detector, with comparable…
Probing the large scale structure using gravitational-wave observations of binary black holes
Aditya Vijaykumar, M. V. S. Saketh, Sumit Kumar +2
Third generation gravitational-wave (GW) detectors are expected to detect a large number of binary black holes (BBHs) to large redshifts, opening up an independent probe of the lar…
Constraints on the time variation of the gravitational constant using gravitational-wave observations of binary neutron stars
Aditya Vijaykumar, Shasvath J. Kapadia, Parameswaran Ajith
We propose a method to constrain the variation of the gravitational constant with cosmic time using gravitational-wave (GW) observations of merging binary neutron stars. The me…