March 30, 2021 to April 1, 2021
Institut Henri Poincaré
Europe/Paris timezone

Seismic characterization of Virgo: space-time spectral analysis

Not scheduled
20m
Amphithéâtre Hermite (Institut Henri Poincaré)

Amphithéâtre Hermite

Institut Henri Poincaré

11 rue Pierre et Marie Curie 75005 Paris
poster

Speaker

Dr Mateusz Denys (AstroCeNT, Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences)

Description

Mixed space-time spectral analysis was applied for the detection of seismic waves passing through the west-end building of the Virgo interferometer. The method enables detection of every single passing wave, including its frequency, length, direction, and amplitude. A thorough analysis aimed to improving sensitivity of the Virgo detector was made for the data gathered by 38 seismic sensors, in the two-week measurement period, from 24 January to 6 February 2018, and for frequency range 5--20 Hz. Two dominant seismic-wave frequencies were found: 5.5 Hz and 17.1 Hz. The possible sources of these waves were identified, that is, the nearby industrial complex for the frequency 5.5 Hz and a small object 100 m away from the west-end buiding for 17.1 Hz. The obtained results are going to be used to provide better estimation of the newtonian noise near the Virgo interferometer.

Primary author

Dr Mateusz Denys (AstroCeNT, Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences)

Co-authors

Prof. Tomasz Bulik (AstroCeNT, Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences) Robert Szymko (Faculty of Physics, University of Warsaw)

Presentation materials

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