Abstract
In this Letter, we present an upper limit of ΩGW<1. 2×108 on an isotropic stochastic gravitational-wave (GW) background integrated over a year in the frequency range 0.05-1 Hz, which improves current upper limits from high-precision laboratory experiments by about 9 orders of magnitude. The limit is obtained using the response of Earth itself to GWs via a free-surface effect described more than 40 years ago by Dyson. The response was measured by a global network of broadband seismometers selected to maximize the sensitivity.
Original language | English (US) |
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Article number | 101102 |
Journal | Physical review letters |
Volume | 112 |
Issue number | 10 |
DOIs | |
State | Published - Mar 13 2014 |
Externally published | Yes |