If you know how far away an object is, and how fast it is moving away (due to the expansion of the Universe, not because it’s on a bus or something, that is important), you can estimate the Hubble constant. Gravitational waves give us an estimate of the distance to the source of...
The Hubble constant (H_0) measures the current expansion rate of the Universe, and plays a fundamental role in cosmology. Tremendous effort has been dedicated over the past decades to measure H_0. Notably, Planck cosmic microwave background (CMB) and the local Cepheid-supernovae distance ...
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to be v_(pec) = 307 ± 230 km s~(-1), resulting in a cosmic velocity of v_(cosmic) = 2924 ± 236 km s~(-1) (z_(cosmic) = 0.00980 ± 0.00079) and a distance of D_z = 40.4 ± 3.4 Mpc assuming a local Hubble constant of H_0 = 73.24 ± 1.74 km s~(-1) Mpc~(-1)...
the interferometer signals in the same frequency range of\(62{-}115\)Hz (total collection time is 6.5 s) for both detectors. As expected, the accumulated phase is approximately constant as a function of the collection time and can be obtained with a good accuracy from the plots of Fig.4b...