@Article{AggarwalABCSCDFGGGHMMOPQRSSSTTÜW:2021:ChOpGr,
               author = "Aggarwal, Nancy and Aguiar, Odylio Denys de and Bauswein, Andreas 
                         and Cella, Giancarlo and Sebastian, Clesse and Cruise, Adrian 
                         Michael and Domcke, Valerie and Figueroa, Daniel G. and Geraci, 
                         Andrew and Goryachev, Maxim and Grote, H. and Hindmarsh, Mark and 
                         Muia, Francesco and Mukund, Nikhil and Ottaway, David and Peloso, 
                         Marco and Quevedo, Fernando and Ricciardone, Angelo and 
                         Steinlechner, Jessica and Steinlechner, Sebastian and Sun, Sichun 
                         and Tobar, Michael E. and Torrenti, Francisco and {\"U}nal, 
                         Carner and White, Graham",
          affiliation = "{Northwestern University} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {GSI Helmholtzzentrum fu¨r 
                         Schwerionenforschung} and {Istituto Nazionale di Fisica Nucleare} 
                         and {Universite´ Libre de Bruxelles} and {University of 
                         Birmingham} and {} and CERN and {Northwestern University} and 
                         {University of Western Australia} and {Cardiff University} and 
                         {University of Helsinki} and {Deutsches Electronen Synchrotron 
                         (DESY)} and {Leibniz Universit{\"a}t Hannover} and {The 
                         University of Adelaide} and {Universit{\`a} di Padova} and DAMTP, 
                         Centre for Mathematical Sciences and {Universit{\`a} di Padova} 
                         and {Maastricht University} and {Maastricht University} and 
                         {Sapienza University of Rome} and {University of Western 
                         Australia} and {University of Basel} and CEICO, Institute of 
                         Physics of the Czech Academy of Sciences and {The University of 
                         Tokyo}",
                title = "Challenges and opportunities of gravitational-wave searches at MHz 
                         to GHz frequencies",
              journal = "Living Reviews in Relativity",
                 year = "2021",
               volume = "24",
               number = "1",
                pages = "e4",
                month = "Dec.",
             keywords = "Cosmological gravitational waves, Fundamental physics with 
                         gavitational waves, Gravitational wave detectors, 
                         Ultra-high-frequency gravitational waves.",
             abstract = "The first direct measurement of gravitational waves by the LIGO 
                         and Virgo collaborations has opened up new avenues to explore our 
                         Universe. This white paper outlines the challenges and gains 
                         expected in gravitational-wave searches at frequencies above the 
                         LIGO/Virgo band, with a particular focus on Ultra High-Frequency 
                         Gravitational Waves (UHF-GWs), covering the MHz to GHz range. The 
                         absence of known astrophysical sources in this frequency range 
                         provides a unique opportunity to discover physics beyond the 
                         Standard Model operating both in the early and late Universe, and 
                         we highlight some of the most promising gravitational sources. We 
                         review several detector concepts that have been proposed to take 
                         up this challenge, and compare their expected sensitivity with the 
                         signal strength predicted in various models. This report is the 
                         summary of the workshop Challenges and opportunities of 
                         high-frequency gravitational wave detection held at ICTP Trieste, 
                         Italy in October 2019, that set up the stage for the recently 
                         launched Ultra-High-Frequency Gravitational Wave (UHF-GW) 
                         initiative.",
                  doi = "10.1007/s41114-021-00032-5",
                  url = "http://dx.doi.org/10.1007/s41114-021-00032-5",
                 issn = "1433-8351",
             language = "en",
           targetfile = "aggarwal_challenges.pdf",
        urlaccessdate = "16 jun. 2024"
}