Gravitation Group Seminar: Stavros Katsanevas, Lunar Seismic and Gravitational Antenna (LSGA)

Detecting Gravitational Waves at the Moon

NASA’s New Frontier's and Artemis program, Astro2020 decadal survey process, ESA’s European Large Logistics Lander and Voyager 2050,  China’s Chang’e missions demonstrate a renewed interest in lunar exploration with a growing involvement of the private sector.  The lunar environment promises great advantages  over terrestrial installations for low-frequency Gravitational-Wave (GW) observations between about 1 mHz to 10 Hz (See e.g. M. A. Sedda, et al.,  arXiv:1908.11375v2 [gr-qc]  and I. Mandel et al arXiv:1710.11187v1).  Recently,  three lunar  detector concepts: the Gravitational-Wave Lunar Observatory for Cosmology (GLOC) [1], the Lunar Gravitational-Wave Antenna (LGWA) [2], and the Lunar Seismic and Gravitational Antenna (LSGA) [3,4] were independently proposed. GLOC  lies technologically close to the currently operating ground-based GW detectors. LGWA and LSGA exploit     the response of the Moon to GWs and they are both accepted responses to ESA's L3 call of ideas and their coordinators participate to the Astronomy and Geophysics Topical Teams preparing L3. LSGA in particular, that I co-coordinate concerns the deployment of a 3km long Engineered Fiber Distributed Acoustic Sensors (EFDAS) system, an Optical Very Broad Band seismometer (OVBB) and a Lunar Surface Laser Retroreflector (LSLR). The network will satisfy a Gravitational Wave (GW) detection program in synergy  with the earth and space GW detectors, geoscience and planetology goals,  an acoustic follow-up of the lunar surface and subsurface with the potential to address current theoretical and experimental challenges concerning the flux and origin of Ultra-High Energy Cosmic Rays (UHECR), meteoric impact evaluations, and lunar habitability issues.  In  my talk  I will  investigate  the  in particular feasibility  of  GW  detection  on  the  Moon. The main technological challenges will be identified  and recommendations will be made how to address them. The corresponding impact on the GW science case will be investigated with focus on fundamental physics, black-hole populations through cosmic history, and multi-messenger astrophysics. Synergies of lunar GW detectors with other future GW detectors including the space-borne detector LISA and the proposed next-generation, ground-based detectors Einstein Telescope and Cosmic Explorer, will be described. Synergies with Géosciene and Planetology issues will also be described. Finally the measurement of the Ultra High Energy Cosmic Ray components, through the acoustic signal of their impact on the lunar surface will be investigated. 
  1. Jani K and Loeb A 2020 Gravitational-Wave Lunar Observatory for Cosmology arXiv:2007.08550v1 [gr-qc] 16 Jul 2020
  2. Harms J et al.  2021 The Astrophysical Journal 910 1
  3.  Katsanevas    S,    Lognonné    P,    et al    2020    Lunar Seismic and Gravitational Antenna (LSGA)URL
  4. See also the "First workshop on the Gravitational Wave detection on the Moon", co-organised by the 3 teams at the European Gravitational Observatory,


Lundi, 25 avril, 2022 - 11:00 to 12:00

Localisation / Location: 


Salle / Local: 

  • Séminaire

Nom/Prénom // Last name/First name: 

Stavros Katsanevas


Université Paris Denis Diderot

Equipe(s) organisatrice(s) / Organizing team(s): 

  • Gravitation

Pays / Country: 


Yes Mail à apc_tous: