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- W1496341505 abstract "A new method is proposed for directly measuring the expansion rate of the universe through very precise measurement of the fluence of extremely stable sources. The method is based on the definition of the luminosity distance and its change along the time due to the cosmic expansion. It is argued that galaxies may be chosen as the targets of the observation to perform the measurement. We show that, by simultaneously increasing the observation time and physically adding the fluences from different galaxies, the requirement on the relative precision of the detector for an observation of 1 second on a single galaxy can be relaxed to $10^{-5}$. Benefiting from the abundance of galaxies in the universe, the method may be quite promising." @default.
- W1496341505 created "2016-06-24" @default.
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- W1496341505 date "2010-01-22" @default.
- W1496341505 modified "2023-09-27" @default.
- W1496341505 title "Possible direct measurement of the expansion rate of the universe" @default.
- W1496341505 hasPublicationYear "2010" @default.
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