P. Astone et al., Upper limit at 1.8 kHz for a gravitational-wave stochastic background withthe ALTAIR resonant-mass detector, ASTRON ASTR, 343(1), 1999, pp. 19-22
The sensitivity to a cosmic stochastic background of gravitational waves of
the resonant cryogenic antenna ALTAIR, operating at 1.8 kHz, is reported.
An experimental upper limit of ALTAIR is compared with the upper limits giv
en by the other detectors at lower frequencies.