Christian, PierreLoeb, Abraham2023-01-242017Christian, Pierre, and Abraham Loeb. 2017. “Interferometric Measurement of Acceleration at Relativistic Speeds.” The Astrophysical Journal 834 (2) (January 12): L20. doi:10.3847/2041-8213/834/2/l20. http://dx.doi.org/10.3847/2041-8213/834/2/l20.2041-8213https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37374095We show that an interferometer moving at a relativistic speed relative to a point source of light offers a sensitive probe of acceleration. Such an accelerometer contains no moving parts, and is thus more robust than conventional "mass-on-a-spring" accelerometers. In an interstellar mission to Alpha-Centauri, such an accelerometer could be used to measure the masses of planets around other stars as well as the mass distribution of the Milky Way Galaxy.en-USJournal Article2017-02-1420162023-01-2410.3847/2041-8213/834/2/l20