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Probing the gravitational redshift with an Earth-orbiting satellite

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arxiv 1710.10074 v1 pith:VA3XPNOB submitted 2017-10-27 gr-qc astro-ph.IM

Probing the gravitational redshift with an Earth-orbiting satellite

classification gr-qc astro-ph.IM
keywords gravitationalredshiftsatellitegravityproberadioastronaccuracyagree
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present an approach to testing the gravitational redshift effect using the RadioAstron satellite. The experiment is based on a modification of the Gravity Probe A scheme of nonrelativistic Doppler compensation and benefits from the highly eccentric orbit and ultra-stable atomic hydrogen maser frequency standard of the RadioAstron satellite. Using the presented techniques we expect to reach an accuracy of the gravitational redshift test of order $10^{-5}$, a magnitude better than that of Gravity Probe A. Data processing is ongoing, our preliminary results agree with the validity of the Einstein Equivalence Principle.

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