Time drift of subtended angles as a new cosmological probe

Details Time drift of subtended angles as a new cosmological probe Time drift of subtended angles as a new cosmological probe

2009-11-10

arxiv.org/abs/0911.1859v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

JHEP style, 7 pages, 4 figures

Scientific paper

We here propose the time drift of subtended angles as a new possible
cosmological probe. In particular, with the coming era of microarcsecond
astrometry, our proposal can be used to measure the Hubble expansion rate of
our universe in a direct way.

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