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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