465 citations · 1.5k across the 23 of their papers we have counts for
23 papers
Narrowing RIFT: Focused simulation-based-inference for interpreting exceptional GW sources
Katelyn J. Wagner, R. O'Shaughnessy, A. Yelikar +6
The Rapid Iterative FiTting (RIFT) parameter inference algorithm provides a simulation-based inference approach to efficient, highly-parallelized parameter inference for GW sources…
Varaha: A promising sampler for obtaining gravitational wave posteriors
Vaibhav Tiwari
Nested sampling is often used in Bayesian statistics problems in astronomy. It operates with a set of live points, iteratively replacing the point with the lowest likelihood with a…
What's in a binary black hole's mass parameter?
Vaibhav Tiwari
The black hole masses measured from gravitational wave observations appear to cluster around specific mass values. Consequently, the primary~(and chirp) mass distribution of binary…
VARAHA: A Fast Non-Markovian sampler for estimating Gravitational-Wave posteriors
Vaibhav Tiwari, Charlie Hoy, Stephen Fairhurst +1
This article introduces VARAHA, an open-source, fast, non-Markovian sampler for estimating gravitational-wave posteriors. VARAHA differs from existing Nested sampling algorithms by…
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…
Exploring Features in the Binary Black Hole Population
Vaibhav Tiwari
Vamana is a mixture model framework that infers the astrophysical distribution of chirp mass, mass ratio, and spin component aligned with the orbital angular momentum for the binar…
Understanding how fast black holes spin by analysing data from the second gravitational-wave catalogue
Charlie Hoy, Stephen Fairhurst, Mark Hannam +1
The Advanced LIGO and Virgo detectors have now observed approximately 50 black-hole-binary mergers, from which we can begin to infer how rapidly astrophysical black holes spin. The…
Applying Cosmological Principle to Better Probe the Redshift Evolution of Binary Black Hole Merger Rate
Vaibhav Tiwari
Gravitational waves inform about the probable distances at which an observed signal originated. This information when combined over multiple observations is used in the modeling of…
All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems
The LIGO Scientific Collaboration, the Virgo Collaboration, R. Abbott +1369
Rapidly spinning neutron stars are promising sources of persistent, continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter…
The Emergence of Structure in the Binary Black Hole Mass Distribution
Vaibhav Tiwari, Stephen Fairhurst
We use the gravitational wave signals from binary black hole merger events observed by LIGO and Virgo to reconstruct the underlying mass and spin distributions of the population of…
VAMANA: Modeling Binary Black Hole Population with Minimal Assumptions
Vaibhav Tiwari
The population analysis of compact binaries involves the reconstruction of some of the gravitational wave (GW) signal parameters, such as, the mass and the spin distribution, that…
Coherent WaveBurst, a pipeline for unmodeled gravitational-wave data analysis
M. Drago, V. Gayathri, S. Klimenko +12
coherent WaveBurst (cWB) is a highly configurable pipeline designed to detect a broad range of gravitational-wave (GW) transients in the data of the worldwide network of GW detecto…
All-sky search for short gravitational-wave bursts in the second Advanced LIGO and Advanced Virgo run
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1186
We present the results of a search for short-duration gravitational-wave transients in the data from the second observing run of Advanced LIGO and Advanced Virgo. We search for gra…
All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO O2 data
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1130
We present results of an all-sky search for continuous gravitational waves (CWs), which can be produced by fast-spinning neutron stars with an asymmetry around their rotation axis,…
Constraining black-hole spins with gravitational wave observations
Vaibhav Tiwari, Stephen Fairhurst, Mark Hannam
The observation of gravitational-wave signals from merging black-hole binaries enables direct measurement of the properties of the black holes. An individual observation allows mea…
Estimation of the Sensitive Volume for Gravitational-wave Source Populations Using Weighted Monte Carlo Integration
Vaibhav Tiwari
The population analysis and estimation of merger rates of compact binaries is one of the important topics in gravitational wave (GW) astronomy. The primary ingredient in these anal…
Localization of binary mergers with gravitational-wave detectors of second and third generation
Joseph Mills, Vaibhav Tiwari, Stephen Fairhurst
The observation of gravitational wave signals from binary black hole mergers has established the field of gravitational wave astronomy. It is expected that future networks of gravi…
Enhancing the significance of gravitational wave bursts through signal classification
S. Vinciguerra, M. Drago, G. A. Prodi +7
The quest to observe gravitational waves challenges our ability to discriminate signals from detector noise. This issue is especially relevant for transient gravitational waves sea…
A Proposed Search for the Detection of Gravitational Waves from Eccentric Binary Black Holes
Vaibhav Tiwari, Sergey Klimenko, Nelson Christensen +14
Most of compact binary systems are expected to circularize before the frequency of emitted gravitational waves (GWs) enters the sensitivity band of the ground based interferometric…
Method for detection and reconstruction of gravitational wave transients with networks of advanced detectors
S. Klimenko, G. Vedovato, M. Drago +8
We present a method for detection and reconstruction of the gravitational-wave (GW) transients with the networks of advanced detectors. Originally designed to search for transients…
Reconstruction of Chirp Mass in the Search of Compact Binaries
Vaibhav Tiwari, Sergei Klimenko, Valentin Necula +1
Excess energy method is used in searches of gravitational waves (GWs) produced from sources with poorly modeled characteristics. It identifies GW events by searching for a coincide…
Regression of Environmental Noise in LIGO Data
Vaibhav Tiwari, Marco Drago, Valery Frolov +8
We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the…
Prospects for intermediate mass black hole binary searches with advanced gravitational-wave detectors
G. Mazzolo, F. Salemi, M. Drago +8
We estimated the sensitivity of the upcoming advanced, ground-based gravitational-wave observatories (the upgraded LIGO and Virgo and the KAGRA interferometers) to coalescing inter…