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arxiv: 0911.1859 · v1 · submitted 2009-11-10 · 🌌 astro-ph.CO · gr-qc

Time drift of subtended angles as a new cosmological probe

classification 🌌 astro-ph.CO gr-qc
keywords anglescosmologicaldriftprobesubtendedtimeastrometrycoming
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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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