An upper limit in the stochastic gravitational-wave background of cosmological origin (LIGO)
McClelland, David; Gray, Malcolm; Lam, Ping Koy; McKenzie, Kirk; Mow-Lowry, C; Mullavey, Adam; Satterthwaite, Matthew; Scott, Susan M; Slagmolen, Bram; Wette, Karl; LIGO, Scientific Collaboration (700 Scientists); Allen, G; Bartos, I; Cadonati, L; Bradaschia, C; Daw, E. J.; Evans, T; Finn, Lee; Greenhalgh, R. J. S.; Hage, Boris; Heefner, J; Hosken, Dave; Hough, J; Ivanov, A
A stochastic background of gravitational waves is expected to arise from a superposition of a large number of unresolved gravitational-wave sources of astrophysical and cosmological origin. It should carry unique signatures from the earliest epochs in the evolution of the Universe, inaccessible to standard astrophysical observations. Direct measurements of the amplitude of this background are therefore of fundamental importance for understanding the evolution of the Universe when it was younger...[Show more]
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