649 citations · 5.1k across the 69 of their papers we have counts for
23 papers · 1 filter
Search for gravitational waves from eccentric binary black holes with an effective-one-body template
Yi-Fan Wang, Alexander H. Nitz
As gravitational wave astronomy has entered an era of routine detections, it becomes increasingly important to precisely measure the physical parameters of individual events and in…
Hierarchical searches for subsolar-mass binaries and the third-generation gravitational wave detector era
Kanchan Soni, Alexander H. Nitz
The detection of gravitational waves (GWs) from coalescing compact binaries has become routine with ground-based detectors like LIGO and Virgo. However, beyond standard sources suc…
A Tale of Two Black Holes: Multiband Gravitational-Wave Measurement of Recoil Kicks
Shobhit Ranjan, Karan Jani, Alexander H. Nitz +2
The non-linear dynamics of General Relativity leave their imprint on remnants of black hole mergers in the form of a recoil ``kick''. The kick has profound astrophysical implicatio…
A gating-and-inpainting perspective on GW150914 ringdown overtone: understanding the data analysis systematics
Yi-Fan Wang, Collin D. Capano, Jahed Abedi +5
We revisit the recent debate on the evidence for an overtone in the black hole ringdown of GW150914 using an independent data-analysis pipeline. By gating and inpainting the data,…
Characterizing Gravitational Wave Detector Networks: From A to Cosmic Explorer
Ish Gupta, Chaitanya Afle, K. G. Arun +44
Gravitational-wave observations by the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo have provided us a new tool to explore the Universe on all scales from n…
Estimating False Alarm Rates of Sub-Dominant Quasi-normal Modes in GW190521
Collin D. Capano, Jahed Abedi, Shilpa Kastha +6
A major aim of gravitational wave astronomy is to test observationally the Kerr nature of black holes. The strongest such test, with minimal additional assumptions, is provided by…
Utilizing the null stream of the Einstein Telescope
Boris Goncharov, Alexander H. Nitz, Jan Harms
Among third-generation ground-based gravitational-wave detectors proposed for the next decade, the Einstein Telescope provides a unique kind of null stream $\unicode{x2014}$ the si…
A multimode quasi-normal spectrum from a perturbed black hole
Collin D. Capano, Miriam Cabero, Julian Westerweck +6
When two black holes merge, the late stage of gravitational wave emission is a superposition of exponentially damped sinusoids. According to the black hole no-hair theorem, this ri…
Binary black hole spectroscopy: a no-hair test of GW190814 and GW190412
Collin D. Capano, Alexander H. Nitz
Gravitational waves provide a window to probe general relativity (GR) under extreme conditions. The recent observations of GW190412 and GW190814 are unique high-mass-ratio mergers…
Posterior samples of the parameters of binary black holes from Advanced LIGO, Virgo's second observing run
Soumi De, Christopher M. Biwer, Collin D. Capano +2
This paper presents a parameter estimation analysis of the seven binary black hole mergers---GW170104, GW170608, GW170729, GW170809, GW170814, GW170818, and GW170823---detected dur…
1-OGC: The first open gravitational-wave catalog of binary mergers from analysis of public Advanced LIGO data
Alexander H. Nitz, Collin Capano, Alex B. Nielsen +4
We present the first Open Gravitational-wave Catalog (1-OGC), obtained by using the public data from Advanced LIGO's first observing run to search for compact-object binary mergers…
PyCBC Live: Rapid Detection of Gravitational Waves from Compact Binary Mergers
Alexander H. Nitz, Tito Dal Canton, Derek Davis +1
We introduce an efficient and straightforward technique for rapidly detecting gravitational waves from compact binary mergers. We show that this method achieves the low latencies r…
Low significance of evidence for black hole echoes in gravitational wave data
Julian Westerweck, Alex B. Nielsen, Ofek Fischer-Birnholtz +6
Recent detections of merging black holes allow observational tests of the nature of these objects. In some proposed models, non-trivial structure at or near the black hole horizon…
Observational tests of the black hole area increase law
Miriam Cabero, Collin D. Capano, Ofek Fischer-Birnholtz +4
The black hole area theorem implies that when two black holes merge, the area of the final black hole should be greater than the sum of the areas of the two original black holes. W…
Distinguishing short duration noise transients in LIGO data to improve the PyCBC search for gravitational waves from high mass binary black hole mergers
Alexander Harvey Nitz
"Blip glitches" are a type of short duration transient noise in LIGO data. The cause for the majority of these is currently unknown. Short duration transient noise creates challeng…
Detecting binary compact-object mergers with gravitational waves: Understanding and Improving the sensitivity of the PyCBC search
Alexander H. Nitz, Thomas Dent, Tito Dal Canton +2
We present an improved search for binary compact-object mergers using a network of ground-based gravitational-wave detectors. We model a volumetric, isotropic source population and…
Comments on: "Echoes from the abyss: Evidence for Planck-scale structure at black hole horizons"
Gregory Ashton, Ofek Birnholtz, Miriam Cabero +7
Recently, Abedi, Dykaar and Afshordi claimed evidence for a repeating damped echo signal following the binary black hole merger gravitational-wave events recorded in the first obse…
The PyCBC search for gravitational waves from compact binary coalescence
Samantha A. Usman, Alexander H. Nitz, Ian W. Harry +18
We describe the PyCBC search for gravitational waves from compact-object binary coalescences in advanced gravitational-wave detector data. The search was used in the first Advanced…
Implementing a search for aligned-spin neutron star -- black hole systems with advanced ground based gravitational wave detectors
Tito Dal Canton, Alexander H. Nitz, Andrew P. Lundgren +9
We study the effect of spins on searches for gravitational waves from compact binary coalescences in realistic simulated early advanced LIGO data. We construct a detection pipeline…
Investigating the effect of precession on searches for neutron-star-black-hole binaries with Advanced LIGO
I. W. Harry, A. H. Nitz, Duncan A. Brown +3
The first direct detection of neutron-star-black-hole binaries will likely be made with gravitational-wave observatories. Advanced LIGO and Advanced Virgo will be able to observe n…
Accuracy of gravitational waveform models for observing neutron-star--black-hole binaries in Advanced LIGO
Alexander H. Nitz, Andrew Lundgren, Duncan A. Brown +3
Gravitational waves radiated by the coalescence of compact-object binaries containing a neutron star and a black hole are one of the most interesting sources for the ground-based g…
Template banks to search for low-mass binary black holes in advanced gravitational-wave detectors
Duncan A. Brown, Prayush Kumar, Alexander H. Nitz
Coalescing binary black holes (BBHs) are among the most likely sources for the Laser Interferometer Gravitational-wave Observatory (LIGO) and its international partners Virgo and K…
Detecting binary neutron star systems with spin in advanced gravitational-wave detectors
Duncan A. Brown, Ian Harry, Andrew Lundgren +1
The detection of gravitational waves from binary neutron stars is a major goal of the gravitational-wave observatories Advanced LIGO and Advanced Virgo. Previous searches for binar…