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Dive into the research topics where E. Katsavounidis is active.

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Featured researches published by E. Katsavounidis.


The Astrophysical Journal | 2015

LOCALIZATION OF SHORT DURATION GRAVITATIONAL-WAVE TRANSIENTS WITH THE EARLY ADVANCED LIGO AND VIRGO DETECTORS

R. C. Essick; Salvatore Vitale; E. Katsavounidis; G. Vedovato; Sergey Klimenko

The Laser Interferometer Gravitational wave Observatory (LIGO) and Virgo advanced ground-based gravitational-wave detectors will begin collecting science data in 2015. With first detections expected to follow, it is important to quantify how well generic gravitational-wave transients can be localized on the sky. This is crucial for correctly identifying electromagnetic counterparts as well as understanding gravitational-wave physics and source populations. We present a study of sky localization capabilities for two search and parameter estimation algorithms: coherent WaveBurst, a constrained likelihood algorithm operating in close to real-time, and LALInferenceBurst, a Markov chain Monte Carlo parameter estimation algorithm developed to recover generic transient signals with latency of a few hours. Furthermore, we focus on the first few years of the advanced detector era, when we expect to only have two (2015) and later three (2016) operational detectors, all below design sensitivity. These detector configurations can produce significantly different sky localizations, which we quantify in detail. We observe a clear improvement in localization of the average detected signal when progressing from two-detector to three-detector networks, as expected. Although localization depends on the waveform morphology, approximately 50% of detected signals would be imaged after observing 100-200 deg2 in 2015 and 60-110 deg2 in 2016, although knowledge of the waveform can reduce this to as little as 22?deg2. This is the first comprehensive study on sky localization capabilities for generic transients of the early network of advanced LIGO and Virgo detectors, including the early LIGO-only two-detector configuration.


Classical and Quantum Gravity | 2008

A comparison of methods for gravitational wave burst searches from LIGO and Virgo

F. Beauville; M. A. Bizouard; L. Blackburn; L. Bosi; L. Brocco; D. A. Brown; D. Buskulic; F. Cavalier; S. Chatterji; N. Christensen; A.-C. Clapson; S. Fairhurst; D. Grosjean; G. M. Guidi; P. Hello; S. Heng; M. Hewitson; E. Katsavounidis; Sergey Klimenko; M. Knight; A. Lazzarini; N. Leroy; F. Marion; J. Markowitz; C. Melachrinos; B. Mours; F. Ricci; A. Viceré; I. Yakushin; M. Zanolin

The search procedure for burst gravitational waves has been studied using 24 h of simulated data in a network of three interferometers (Hanford 4 km, Livingston 4 km and Virgo 3 km are the example interferometers). Several methods to detect burst events developed in the LIGO Scientific Collaboration (LSC) and Virgo Collaboration have been studied and compared. We have performed coincidence analysis of the triggers obtained in the different interferometers with and without simulated signals added to the data. The benefits of having multiple interferometers of similar sensitivity are demonstrated by comparing the detection performance of the joint coincidence analysis with LSC and Virgo only burst searches. Adding Virgo to the LIGO detector network can increase by 50% the detection efficiency for this search. Another advantage of a joint LIGO–Virgo network is the ability to reconstruct the source sky position. The reconstruction accuracy depends on the timing measurement accuracy of the events in each interferometer, and is displayed in this paper with a fixed source position example.


Physical Review D | 2013

Application of machine learning algorithms to the study of noise artifacts in gravitational-wave data

R. Biswas; L. Blackburn; Junwei Cao; R. C. Essick; K. A. Hodge; E. Katsavounidis; K. Kim; Young-Min Kim; Eric-Olivier Le Bigot; Chang-Hwan Lee; J. J. Oh; Sang Hoon Oh; E. J. Son; Ye Tao; R. Vaulin; Xiaoge Wang


American Astronomical Society | 2014

FIRST SEARCHES FOR OPTICAL COUNTERPARTS TO GRAVITATIONAL-WAVE CANDIDATE EVENTS

N. Aggarwal; L. Barsotti; T. P. Bodiya; F. Donovan; R. C. Essick; M. Evans; P. Fritschel; Slawek Gras; T. Isogai; E. Katsavounidis; J. S. Kissel; Jin-Wook Lee; M. MacInnis; K. Mason; F. Matichard; N. Mavalvala; R. Mittleman; E. Oelker; D. H. Shoemaker; R. Vaulin; Salvatore Vitale; Rainer Weiss; C. C. Wipf; S. Barnum; S. Foley; P. Kwee; S.J. Waldman; F. Zhang


APS | 2011

Search for gravitational waves associated with the August 2006 timing glitch of the Vela pulsar

L. Barsotti; L. Blackburn; T. P. Bodiya; Jianshu Cao; T. R. Corbitt; F. Donovan; I. Duke; M. Evans; S. Foley; P. Fritschel; G. M. Harry; Barbara Hughey; E. Katsavounidis; M. MacInnis; J. Markowitz; K. Mason; F. Matichard; N. Mavalvala; R. Mittleman; P. Sarin; B. Shapiro; D. H. Shoemaker; N. D. Smith; Andrew J. Stein; Leo C. Stein; S. J. Waldman; R. Weiss; C. C. Wipf; M. E. Zucker


APS | 2010

All-sky search for gravitational-wave bursts in the first joint LIGO-GEO-Virgo run

R. Weiss; M. E. Zucker; C. C. Wipf; S. J. Waldman; Leo C. Stein; Andrew J. Stein; Nicolas de Mateo Smith; D. H. Shoemaker; B. Shapiro; P. Sarin; R. Mittleman; N. Mavalvala; F. Matichard; K. Mason; J. Markowitz; M. MacInnis; E. Katsavounidis; B. Hughey; G. M. Harry; P. Fritschel; S. Foley; M. Evans; I. Duke; F. Donovan; T. R. Corbitt; Junwei Cao; T. P. Bodiya; L. Blackburn; L. Barsotti


APS | 2009

Search for gravitational wave ringdowns from perturbed black holes in LIGO S4 data

M. E. Zucker; C. C. Wipf; R. Weiss; S. J. Waldman; Leo C. Stein; Andrew J. Stein; Nicolas de Mateo Smith; D. H. Shoemaker; B. Shapiro; P. Sarin; L. Ruet; R. Mittleman; K. Mason; J. Markowitz; M. MacInnis; E. Katsavounidis; B. Hughey; G. M. Harry; F. Grimaldi; Keisuke Goda; P. Fritschel; S. Foley; M. Evans; I. Duke; F. Donovan; T. R. Corbitt; Junwei Cao; G. Brunet; T. P. Bodiya; L. Blackburn


APS | 2009

Search for gravitational waves from low mass binary coalescences in the first year of LIGO’s S5 data

M. E. Zucker; C. C. Wipf; R. Weiss; S. J. Waldman; Leo C. Stein; Andrew J. Stein; Nicolas de Mateo Smith; D. H. Shoemaker; B. Shapiro; P. Sarin; R. Mittleman; K. Mason; J. Markowitz; M. MacInnis; E. Katsavounidis; B. Hughey; G. M. Harry; F. Grimaldi; Keisuke Goda; P. Fritschel; S. Foley; M. Evans; I. Duke; F. Donovan; T. R. Corbitt; Junwei Cao; G. Brunet; T. P. Bodiya; L. Blackburn; L. Barsotti


APS | 2009

Search for gravitational-wave bursts in the first year of the fifth LIGO science run

M. E. Zucker; C. C. Wipf; R. Weiss; S. J. Waldman; Leo C. Stein; Andrew J. Stein; Nicolas de Mateo Smith; D. H. Shoemaker; B. Shapiro; P. Sarin; R. Mittleman; N. Mavalvala; K. Mason; J. Markowitz; M. MacInnis; E. Katsavounidis; B. Hughey; G. M. Harry; F. Grimaldi; Keisuke Goda; P. Fritschel; S. Foley; M. Evans; I. Duke; F. Donovan; T. R. Corbitt; Junwei Cao; G. Brunet; T. P. Bodiya; L. Blackburn


APS | 2009

Search for high frequency gravitational-wave bursts in the first calendar year of LIGO's fifth science run

M. E. Zucker; C. C. Wipf; R. Weiss; S. J. Waldman; J. Villadsen; Leo C. Stein; Andrew J. Stein; Nicolas de Mateo Smith; D. H. Shoemaker; B. Shapiro; P. Sarin; R. Mittleman; N. Mavalvala; K. Mason; J. Markowitz; M. MacInnis; E. Katsavounidis; B. Hughey; G. M. Harry; F. Grimaldi; Keisuke Goda; P. Fritschel; S. Foley; M. Evans; I. Duke; F. Donovan; T. R. Corbitt; Junwei Cao; G. Brunet; T. P. Bodiya

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C. C. Wipf

Massachusetts Institute of Technology

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D. H. Shoemaker

Massachusetts Institute of Technology

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F. Donovan

Massachusetts Institute of Technology

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J. Markowitz

Massachusetts Institute of Technology

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K. Mason

Massachusetts Institute of Technology

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L. Blackburn

Goddard Space Flight Center

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M. Evans

Massachusetts Institute of Technology

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M. MacInnis

Massachusetts Institute of Technology

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P. Fritschel

Massachusetts Institute of Technology

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R. Mittleman

Massachusetts Institute of Technology

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