PQMon: a powerful veto for burst events

Kötter, Karsten; Heng, Ik Siong; Hewitson, Martin; Strain, Kenneth A.; Woan, G.; Ward, H.

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PQMon: a powerful veto for burst events

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Kötter, Karsten
AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

Heng, Ik Siong
AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Hewitson, Martin
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

Strain, Kenneth A.
AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

Woan, G.
AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

Ward, H.
AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Citation

Kötter, K., Heng, I. S., Hewitson, M., Strain, K. A., Woan, G., & Ward, H. (2003). PQMon: a powerful veto for burst events. Classical and Quantum Gravity, 20, S895-S902.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-51FF-C

Abstract

Data taken by the gravitational wave detector GEO 600 (Danzmann K et al 1994 GEO 600—Proposal for a 600m Laser-Interferometric Gravitational Wave Antenna (Garching:MPQ)) during the science run 'S1' contain a large number of transients. In order to reduce the false-alarm rate of burst gravitational wave search algorithms it is desirable to veto all those transients that are clearly not of gravitational wave origin. This paper presents a method of vetoing transients by looking at the 'in-phase' (P) and 'quadrature' (Q) channels of the demodulated interferometer output signal. By taking advantage of the fact that the P-channel and the Q-channel have different sensitivities to gravitational wave burst events, this method can veto transients that have a power distribution different from the signature of a signal induced by a gravitational wave.