TY  - JOUR
AU  - Aggarwal, N. et al
AU  - Figueroa, D. G.
PY  - 2021
DA  - 2021//
TI  - Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies
T2  - Living Rev. Relativ.
JO  - Living Reviews in Relativity
SP  - 4
EP  - 74pp
VL  - 24
IS  - 1
PB  - Springer Int Publ Ag
KW  - Ultra-high-frequency gravitational waves
KW  - Cosmological gravitational waves
KW  - Gravitational wave detectors
KW  - Fundamental physics with gavitational waves
AB  - 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.
SN  - 2367-3613
UR  - https://arxiv.org/abs/2011.12414
UR  - https://doi.org/10.1007/s41114-021-00032-5
DO  - 10.1007/s41114-021-00032-5
LA  - English
N1  - WOS:000727359500002
ID  - Aggarwal+Figueroa2021
ER  -