Crosscorrelation measurement of stochastic gravitational waves with two resonant gravitational wave detectors

Authors
Astone, P Bassan, M Bonifazi, P Carelli, P Cosmelli, C Coccia, E Fafone, V Frasca, S Marini, A Minenkov, Y Modena, I Modestino, G Moleti, A Pallottino, GV Papa, MA Pizzella, G Ronga, F Terenzi, R Visco, M Votano, L
Citation
P. Astone et al., Crosscorrelation measurement of stochastic gravitational waves with two resonant gravitational wave detectors, ASTRON ASTR, 351(3), 1999, pp. 811-814
Citations number
16
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
351
Issue
3
Year of publication
1999
Pages
811 - 814
Database
ISI
SICI code
0004-6361(199911)351:3<811:CMOSGW>2.0.ZU;2-P
Abstract
We report on the crosscorrelation analysis of the data recorded by the grav itational wave (g.w.) resonant detectors Explorer and Nautilus, performed t o obtain information on the g.w. stochastic background. We found that the q uantity Omega(gw)(f), that measures the closure of the Universe, is Omega(g w)(f) less than or equal to 6.10, at 907.20 +/- 0.05 Hz, where the factor 1 0 is obtained by the crosscorrelation analysis and the factor 6 takes into account the distance (similar or equal to 600 km) between Explorer and Naut ilus. This is the first experiment where the data of two g.w. cryogenic res onant detectors are crosscorrelated.