E. Katsavounidis
Massachusetts Institute of Technology
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Featured researches published by E. Katsavounidis.
The Astrophysical Journal | 2015
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
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
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
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
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
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
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
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
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
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