Can lightning be a noise source for a spherical gravitational wave antenna?

Details Can lightning be a noise source for a spherical gravitational wave antenna? Can lightning be a noise source for a spherical gravitational wave antenna?

2005-12-11

arxiv.org/abs/gr-qc/0512064v1

Phys.Rev. D72 (2005) 102003

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, 6 figures

Scientific paper

10.1103/PhysRevD.72.102003

The detection of gravitational waves is a very active research field at the moment. In Brazil the gravitational wave detector is called Mario SCHENBERG. Due to its high sensitivity it is necessary to model mathematically all known noise sources so that digital filters can be developed that maximize the signal-to-noise ratio. One of the noise sources that must be considered are the disturbances caused by electromagnetic pulses due to lightning close to the experiment. Such disturbances may influence the vibrations of the antenna's normal modes and mask possible gravitational wave signals. In this work we model the interaction between lightning and SCHENBERG antenna and calculate the intensity of the noise due to a close lightning stroke in the detected signal. We find that the noise generated does not disturb the experiment significantly.

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