175 citations · 334 across the 17 of their papers we have counts for
13 papers · 1 filter
Searching for precessing binary systems with mode-by-mode filtering and marginalization
Zihan Zhou, Digvijay Wadekar, Javier Roulet +8
Nearly all previous binary black hole searches in LIGO--Virgo--KAGRA (LVK) gravitational wave data have assumed that the component spins are aligned with the orbital angular moment…
Data-driven extraction and phenomenology of eccentric harmonics in eccentric spinning binary black hole mergers
Tousif Islam, Tejaswi Venumadhav, Ajit Kumar Mehta +6
Newtonian and post-Newtonian (PN) calculations indicate that the phenomenology of eccentric binary black hole (BBH) merger waveforms is significantly more complex than that of thei…
Binary black hole population inference combining confident and marginal events from the search pipeline
Ajit Kumar Mehta, Digvijay Wadekar, Isha Anantpurkar +6
We present the population properties of binary black hole mergers identified by the pipeline (which incorporates higher-order modes in the search templates) du…
Improving gravitational wave search sensitivity with TIER: Trigger Inference using Extended strain Representation
Digvijay Wadekar, Arush Pimpalkar, Mark Ho-Yeuk Cheung +9
We introduce a machine learning (ML) framework called for improving the sensitivity of gravitational wave search pipelines. Typically, search pipelines only use a s…
Sampler-free gravitational wave inference using matrix multiplication
Jonathan Mushkin, Javier Roulet, Barak Zackay +5
Parameter estimation (PE) for compact binary coalescence (CBC) events observed by gravitational wave (GW) laser interferometers is a core task in GW astrophysics. We present a meth…
Data-driven extraction, phenomenology and modeling of eccentric harmonics in binary black hole merger waveforms
Tousif Islam, Tejaswi Venumadhav, Ajit Kumar Mehta +6
Newtonian and post-Newtonian (PN) calculations suggest that each spherical harmonic mode of the gravitational waveforms (radiation) emitted by eccentric binaries can be further dec…
Significant increase in sensitive volume of a gravitational wave search upon including higher harmonics
Ajit Kumar Mehta, Digvijay Wadekar, Javier Roulet +6
Most gravitational wave searches to date have included only the quadrupole mode in their search templates. Here, we demonstrate that incorporating higher harmonics improves the sea…
New search pipeline for gravitational waves with higher-order modes using mode-by-mode filtering
Digvijay Wadekar, Tejaswi Venumadhav, Javier Roulet +4
Nearly all template-based gravitational wave (GW) searches only include the quasi-circular quadrupolar modes of the signals in their templates. Including additional degrees of free…
Fast marginalization algorithm for optimizing gravitational wave detection, parameter estimation and sky localization
Javier Roulet, Jonathan Mushkin, Digvijay Wadekar +3
We introduce an algorithm to marginalize the likelihood for a gravitational wave signal from a quasi-circular binary merger over its extrinsic parameters, accounting for the effect…
New black hole mergers in the LIGO-Virgo O3 data from a gravitational wave search including higher-order harmonics
Digvijay Wadekar, Javier Roulet, Tejaswi Venumadhav +5
Nearly all of the previous gravitational wave (GW) searches in the LIGO-Virgo data included GW waveforms with only the dominant quadrupole harmonic, i.e., omitting higher-order har…
New binary black hole mergers in the LIGO-Virgo O3b data
Ajit Kumar Mehta, Seth Olsen, Digvijay Wadekar +5
We report the detection of 6 new candidate binary black hole (BBH) merger signals in the publicly released data from the second half of the third observing run (O3b) of advanced LI…
New approach to template banks of gravitational waves with higher harmonics: Reducing matched-filtering cost by over an order of magnitude
Digvijay Wadekar, Tejaswi Venumadhav, Ajit Kumar Mehta +5
Searches for gravitational wave events use models, or templates, for the signals of interest. The templates used in current searches in the LIGO-Virgo-Kagra (LVK) data model the do…
Removing degeneracy and multimodality in gravitational wave source parameters
Javier Roulet, Seth Olsen, Jonathan Mushkin +4
Quasicircular binary black hole mergers are described by 15 parameters, of which gravitational wave observations can typically constrain only independent combinations to…