Modulating the experimental signature of a stochastic gravitational wave background

被引:9
作者
Finn, LS [1 ]
Lazzarini, A
机构
[1] Penn State Univ, Ctr Gravitat Phys & Geometry, Dept Phys, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
[3] CALTECH, LIGO Lab, Pasadena, CA 91125 USA
来源
PHYSICAL REVIEW D | 2001年 / 64卷 / 08期
关键词
D O I
10.1103/PhysRevD.64.082002
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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.
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页数:10
相关论文
共 28 条
[1]   LIGO - THE LASER-INTERFEROMETER-GRAVITATIONAL-WAVE-OBSERVATORY [J].
ABRAMOVICI, A ;
ALTHOUSE, WE ;
DREVER, RWP ;
GURSEL, Y ;
KAWAMURA, S ;
RAAB, FJ ;
SHOEMAKER, D ;
SIEVERS, L ;
SPERO, RE ;
THORNE, KS ;
VOGT, RE ;
WEISS, R ;
WHITCOMB, SE ;
ZUCKER, ME .
SCIENCE, 1992, 256 (5055) :325-333
[2]   Detecting a stochastic background of gravitational radiation: Signal processing strategies and sensitivities [J].
Allen, B ;
Romano, JD .
PHYSICAL REVIEW D, 1999, 59 (10)
[3]   Precision alignment of the LIGO 4 km arms using the dual-frequency differential global positioning system [J].
Althouse, WE ;
Hand, SD ;
Jones, LK ;
Lazzarini, A ;
Weiss, R .
REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (07) :3086-3094
[4]  
Ando M, 2000, AIP CONF PROC, V523, P128, DOI 10.1063/1.1291850
[5]  
Astone P, 1999, ASTRON ASTROPHYS, V351, P811
[6]   Stochastic background of gravitational waves [J].
Astone, P ;
Ferrari, V ;
Maggiore, M ;
Romano, JD .
INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2000, 9 (03) :361-368
[7]  
ASTONE P, 1999, ASTRON ASTROPHYS, V19, P343
[8]  
Bendat JS., 2011, RANDOM DATA ANAL MEA
[9]  
BLAIR D, 2000, AIP C P, V523
[10]   The ultracryogenic gravitational-wave detector AURIGA [J].
Cerdonio, M ;
Bonaldi, M ;
Carlesso, D ;
Cavallini, E ;
Caruso, S ;
Colombo, A ;
Falferi, P ;
Fontana, G ;
Fortini, PL ;
Mezzena, R ;
Ortolan, A ;
Prodi, GA ;
Taffarello, L ;
Vedovato, G ;
Vitale, S ;
Zendri, JP .
CLASSICAL AND QUANTUM GRAVITY, 1997, 14 (06) :1491-1494