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MIGA and GW detection with atom interferometry at low frequency

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  • UserAndrea Bertoldi (LP2N)
  • ClockThursday 05 October 2017, 13:00-14:00
  • HousePhysics West 106.

If you have a question about this talk, please contact Sean McGee.

Atom interferometry has been proposed for the realization of GW detectors in the infrasound band (10 mHz – 10 Hz) [1]. Such frequency band is forbidden to current ground based GW detectors due to low frequency gravity gradient noise that causes a tidal effect on the suspended mirrors used as test masses to detect gravitational radiation. Adopting as probes arrays of atom clouds in free fall and interrogated simultaneously in a gravity-gradiometer configuration allows the suppression of Newtonian Noise [2], enables low frequency sensitivity, and opens the way toward the realization of infrasound GW detectors on Earth. In this framework, I will report on the MIGA project [3], whose target is to build a demonstrator for GW detection using atom interferometry in the underground environment of LSBB (Rustrel, France).

[1] S Dimopoulos et al, Phys Lett B 678 , 37 (2009)

[2] W Chaibi et al, Phys Rev D 93 (2), 021101 (2009)

[3] B Canuel et al, arXiv:1703.02490

This talk is part of the Astrophysics Talks Series series.

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