Modulating the experimental signature of a stochastic gravitational wave background

Lee S. Finn, Albert Lazzarini

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Detecting a stationary, stochastic gravitational wave signal is complicated by the impossibility of observing the detector noise independently of the signal. One consequence is that we require at least two detectors to observe the signal, which will be apparent in the cross-correlation of the detector outputs. A corollary is that there remains a systematic error, associated with the possible presence of correlated instrumental noise, in any observation aimed at estimating or limiting a stochastic gravitational wave signal. Here we describe a method of identifying this systematic error by varying the orientation of one of the detectors, leading to separate and independent modulations of the signal and noise contribution to the cross-correlation. Our method can be applied to measurements of a stochastic gravitational wave background by the ALLEGRO-LIGO Livingston Observatory detector pair. We explore - in the context of this detector pair - how this new measurement technique is insensitive to a cross-correlated detector noise component that can confound a conventional measurement.

Original languageEnglish (US)
Article number082002
JournalPhysical Review D
Volume64
Issue number8
DOIs
StatePublished - Dec 1 2001

Fingerprint

gravitational waves
signatures
detectors
systematic errors
cross correlation
LIGO (observatory)
estimating
modulation
output

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

@article{d571e9e0081546b8b3c16b84f05bd9e1,
title = "Modulating the experimental signature of a stochastic gravitational wave background",
abstract = "Detecting a stationary, stochastic gravitational wave signal is complicated by the impossibility of observing the detector noise independently of the signal. One consequence is that we require at least two detectors to observe the signal, which will be apparent in the cross-correlation of the detector outputs. A corollary is that there remains a systematic error, associated with the possible presence of correlated instrumental noise, in any observation aimed at estimating or limiting a stochastic gravitational wave signal. Here we describe a method of identifying this systematic error by varying the orientation of one of the detectors, leading to separate and independent modulations of the signal and noise contribution to the cross-correlation. Our method can be applied to measurements of a stochastic gravitational wave background by the ALLEGRO-LIGO Livingston Observatory detector pair. We explore - in the context of this detector pair - how this new measurement technique is insensitive to a cross-correlated detector noise component that can confound a conventional measurement.",
author = "Finn, {Lee S.} and Albert Lazzarini",
year = "2001",
month = "12",
day = "1",
doi = "10.1103/PhysRevD.64.082002",
language = "English (US)",
volume = "64",
journal = "Physical Review D",
issn = "0556-2821",
number = "8",

}

Modulating the experimental signature of a stochastic gravitational wave background. / Finn, Lee S.; Lazzarini, Albert.

In: Physical Review D, Vol. 64, No. 8, 082002, 01.12.2001.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Modulating the experimental signature of a stochastic gravitational wave background

AU - Finn, Lee S.

AU - Lazzarini, Albert

PY - 2001/12/1

Y1 - 2001/12/1

N2 - Detecting a stationary, stochastic gravitational wave signal is complicated by the impossibility of observing the detector noise independently of the signal. One consequence is that we require at least two detectors to observe the signal, which will be apparent in the cross-correlation of the detector outputs. A corollary is that there remains a systematic error, associated with the possible presence of correlated instrumental noise, in any observation aimed at estimating or limiting a stochastic gravitational wave signal. Here we describe a method of identifying this systematic error by varying the orientation of one of the detectors, leading to separate and independent modulations of the signal and noise contribution to the cross-correlation. Our method can be applied to measurements of a stochastic gravitational wave background by the ALLEGRO-LIGO Livingston Observatory detector pair. We explore - in the context of this detector pair - how this new measurement technique is insensitive to a cross-correlated detector noise component that can confound a conventional measurement.

AB - Detecting a stationary, stochastic gravitational wave signal is complicated by the impossibility of observing the detector noise independently of the signal. One consequence is that we require at least two detectors to observe the signal, which will be apparent in the cross-correlation of the detector outputs. A corollary is that there remains a systematic error, associated with the possible presence of correlated instrumental noise, in any observation aimed at estimating or limiting a stochastic gravitational wave signal. Here we describe a method of identifying this systematic error by varying the orientation of one of the detectors, leading to separate and independent modulations of the signal and noise contribution to the cross-correlation. Our method can be applied to measurements of a stochastic gravitational wave background by the ALLEGRO-LIGO Livingston Observatory detector pair. We explore - in the context of this detector pair - how this new measurement technique is insensitive to a cross-correlated detector noise component that can confound a conventional measurement.

UR - http://www.scopus.com/inward/record.url?scp=4243207250&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243207250&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.64.082002

DO - 10.1103/PhysRevD.64.082002

M3 - Article

AN - SCOPUS:4243207250

VL - 64

JO - Physical Review D

JF - Physical Review D

SN - 0556-2821

IS - 8

M1 - 082002

ER -