Journal Article GSI-2022-00053

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Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies

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2021
Inst. Potsdam

Living reviews in relativity 24(1), 4 () [10.1007/s41114-021-00032-5]

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Report No.: 2011.12414; CERN-TH-2020-185; DESY 20-195; HIP-2020-28/TH; arXiv:2011.12414

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.

Keyword(s): detector: design ; gravitational radiation ; VIRGO ; LIGO ; gravitation ; detector: sensitivity ; new physics ; gravitational radiation: frequency ; gravitational radiation detector ; gravitational radiation: emission ; neutron star: binary ; black hole: binary ; binary: coalescence ; black hole ; superradiance ; inflation ; critical phenomena ; preheating ; star: compact ; detector: noise ; black hole: evaporation ; laser: interferometer ; electromagnetic field: production ; Neutrino Mediterranean Observatory ; defect: topological ; Ultra-high-frequency gravitational waves ; Cosmological gravitational waves ; Gravitational wave detectors ; Fundamental physics with gavitational waves

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Contributing Institute(s):
  1. Nukleare Astrophysik & Struktur (KNA)
Research Program(s):
  1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
  2. GreatMoves - General Relativistic Moving-Mesh Simulations of Neutron-Star Mergers (759253) (759253)
  3. SFB 1245 - SFB 1245: Atomkerne : von fundamentalen Wechselwirkungen zu Struktur und Sternen (279384907) (279384907)
  4. SFB 881 - SFB 881: Das Milchstraßensystem (138713538) (138713538)
Experiment(s):
  1. no experiment theory work (POF3; theory)

Appears in the scientific report 2021
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 Record created 2022-01-12, last modified 2023-10-15