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 language | English (US) |
|---|---|
| Article number | 082002 |
| Journal | Physical Review D |
| Volume | 64 |
| Issue number | 8 |
| DOIs | |
| State | Published - Dec 1 2001 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
Cite this
}
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 journal › Article
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 -