Abstract
Abstract
Terrestrial gravity fluctuations are a target of scientific studies in a variety of fields within geophysics and fundamental-physics experiments involving gravity such as the observation of gravitational waves. In geophysics, these fluctuations are typically considered as signal that carries information about processes such as fault ruptures and atmospheric density perturbations. In fundamental-physics experiments, it appears as environmental noise, which needs to be avoided or mitigated. This article reviews the current state-of-the-art of modeling high-frequency terrestrial gravity fluctuations and of gravity-noise mitigation strategies. It hereby focuses on frequencies above about 50 mHz, which allows us to simplify models of atmospheric gravity perturbations (beyond Brunt–Väisälä regime) and it guarantees as well that gravitational forces on elastic media can be treated as perturbation. Extensive studies have been carried out over the past two decades to model contributions from seismic and atmospheric fields especially by the gravitational-wave community. While terrestrial gravity fluctuations above 50 mHz have not been observed conclusively yet, sensitivity of instruments for geophysical observations and of gravitational-wave detectors is improving, and we can expect first observations in the coming years. The next challenges include the design of gravity-noise mitigation systems to be implemented in current gravitational-wave detectors, and further improvement of models for future gravitational-wave detectors where terrestrial gravity noise will play a more important role. Also, many aspects of the recent proposition to use a new generation of gravity sensors to improve real-time earthquake early-warning systems still require detailed analyses.
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous)
Reference210 articles.
1. Aasi J et al (LIGO Scientific Collaboration) (2015) Advanced LIGO. Class Quantum Grav 32:074001.
https://doi.org/10.1088/0264-9381/32/7/074001
2. Abbott R, Adhikari R, Allen G, Baglino D, Campbell C, Coyne D, Daw E, DeBra D, Faludi J, Fritschel P, Ganguli A, Giaime J, Hammond M, Hardham C, Harry G, Hua W, Jones L, Kern J, Lantz B, Lilienkamp K, Mailand K, Mason K, Mittleman R, Nayfeh S, Ottaway D, Phinney J, Rankin W, Robertson N, Scheffler R, Shoemaker DH, Wen S, Zucker M, Zuo L (2004) Seismic isolation enhancements for initial and Advanced LIGO. Class Quantum Grav 21:S915.
https://doi.org/10.1088/0264-9381/21/5/081
3. Abbott BP et al (LIGO Scientific Collaboration and Virgo Collaboration) (2016) Observation of gravitational waves from a binary black hole merger. Phys Rev Lett 116:061102.
https://doi.org/10.1103/PhysRevLett.116.061102
4. Abbott BP et al. (LIGO Scientific Collaboration and Virgo Collaboration) (2017) GW170817: observation of gravitational waves from a binary neutron star inspiral. Phys Rev Lett 119:161101.
https://doi.org/10.1103/PhysRevLett.119.161101
5. Abbott B P et al (LIGO Scientific Collaboration and Virgo Collaboration) (2018) GWTC-1: a gravitational-wave transient catalog of compact binary mergers observed by LIGO and virgo during the first and second observing runs. arXiv e-prints
arXiv:1811.12907
Cited by
58 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献