276 citations · 398 across the 10 of their papers we have counts for
10 papers
Gravitational redshift test of EEP with RA from near Earth to the distance of the Moon
N. V. Nunes, N. Bartel, A. Belonenko +8
The Einstein Equivalence Principle (EEP) is a cornerstone of general relativity and predicts the existence of gravitational redshift. We report on new results of measuring this shi…
The antenna phase center motion effect in high-accuracy spacecraft tracking experiments
D. A. Litvinov, N. V. Nunes, A. I. Filetkin +5
We present an improved model for the antenna phase center motion effect for high-gain mechanically steerable ground-based and spacecraft-mounted antennas that takes into account no…
The gravitational redshift monitored with RadioAstron from near Earth up to 350,000 km
N. V. Nunes, N. Bartel, M. F. Bietenholz +6
We report on our efforts to test the Einstein Equivalence Principle by measuring the gravitational redshift with the VLBI spacecraft RadioAstron, in an eccentric orbit around Earth…
Joint analysis of two-way laser range and one-way frequency measurements for the gravitational redshift experiment with the RadioAstron spacecraft
M. V. Zakhvatkin, D. A. Litvinov
We consider the problem of joint analysis of two-way laser range and one-way frequency measurements in high-precision tests of general relativity with spacecrafts. Of main interest…
RadioAstron orbit determination and evaluation of its results using correlation of space-VLBI observations
M. V. Zakhvatkin, A. S. Andrianov, V. Yu. Avdeev +14
A crucial part of a space mission for very-long baseline interferometery (VLBI), which is the technique capable of providing the highest resolution images in astronomy, is orbit de…
The antenna phase center motion effect in space-based experiments for fundamental physics and astronomy
A. I. Filetkin, D. A. Litvinov, V. N. Rudenko +1
We consider the effect of phase center motion of mechanically steerable high-gain parabolic antennas for ground-based and spacecraft-mounted antennas. For spacecrafts on highly ell…
Probing the gravitational redshift with an Earth-orbiting satellite
D. A. Litvinov, V. N. Rudenko, A. V. Alakoz +45
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 nonr…
RadioAstron gravitational redshift experiment: status update
D. A. Litvinov, U. Bach, N. Bartel +25
A test of a cornerstone of general relativity, the gravitational redshift effect, is currently being conducted with the RadioAstron spacecraft, which is on a highly eccentric orbit…
RadioAstron as a target and as an instrument: Enhancing the Space VLBI mission's scientific output
Dmitry A. Duev, Mikhail V. Zakhvatkin, Victor A. Stepanyants +5
The accuracy of orbit determination has a strong impact on the scientific output of the Space VLBI mission RadioAstron. The aim of this work is to improve the RadioAstron orbit rec…
RadioAstron -- a Telescope with a Size of 300 000 km: Main Parameters and First Observational Results
N. S. Kardashev, V. V. Khartov, RadioAstron collaboration
The Russian Academy of Sciences and Federal Space Agency, together with the participation of many international organizations, worked toward the launch of the RadioAstron orbiting…