2018/12/03 by С. В. Пилипенко, Pilipenko, S. V., Д. А. Литвинов +5
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Frequency and Time Standards #FOS: Physical sciences #Geophysics and Gravity Measurements #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Radio Astronomy Observations and Technology
paper · pdf · doi:10.48550/arxiv.1812.00605
openalex publication_date 2018/12/03 · openalex created_date 2018/12/11 · openalex updated_date 2026/07/28
We propose a new method to measure gravitational redshift effect using simultaneous interferometric observations of a distant radio source to synchronize clocks. The first order by v/c contribution to the signal (the classical Doppler effect) is automatically canceled in our setup. When other contributions from the velocities of the clocks, clock imperfection and atmosphere are properly taken into account, the residual gravitational redshift can be measured with the relative precision of ∼ 10-3 for RadioAstron space-to-ground interferometer or with precision up to few 10-5 with the next generation of space radio interferometers.