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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Observations and analysis of phase scintillation of spacecraft signal on the interplanetary plasma
Astronomy and Astrophysics, Volume 564, Article A4, Year 2014
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Description
Aims. The phase scintillation of the European Space Agency's Venus Express (VEX) spacecraft telemetry signal was observed at X-band (λ = 3.6 cm) with a number of radio telescopes of the European Very Long Baseline Interferometry (VLBI) Network in the period 2009-2013. Methods. We found a phase fluctuation spectrum along the Venus orbit with a nearly constant spectral index of-2.42 ± 0.25 over the full range of solar elongation angles from 0° to 45°, which is consistent with Kolmogorov turbulence. Radio astronomical observations of spacecraft signals within the solar system give a unique opportunity to study the temporal behaviour of the signal's phase fluctuations caused by its propagation through the interplanetary plasma and the Earth's ionosphere. This gives complementary data to the classical interplanetary scintillation (IPS) study based on observations of the flux variability of distant natural radio sources. Results. We present here our technique and the results on IPS. We compare these with the total electron content for the line of sight through the solar wind. Finally, we evaluate the applicability of the presented technique to phase-referencing VLBI and Doppler observations of currently operational and prospective space missions. © 2014 ESO.
Authors & Co-Authors
Molera Calvés, Guifré
Netherlands, Dwingeloo
Joint Institute for Vlbi in Europe
Finland, Espoo
Aalto University
Pogrebenko, Sergei V.
Netherlands, Dwingeloo
Joint Institute for Vlbi in Europe
Cimó, Giuseppe
Netherlands, Dwingeloo
Joint Institute for Vlbi in Europe
Duev, Dmitry A.
Netherlands, Dwingeloo
Joint Institute for Vlbi in Europe
Russian Federation, Moscow
Lomonosov Moscow State University
Bocanegra-Bahamón, Tatiana M.
Netherlands, Dwingeloo
Joint Institute for Vlbi in Europe
Netherlands, Delft
Delft University of Technology
China, Shanghai
Shanghai Astronomical Observatory Chinese Academy of Sciences
Wagner, Jan F.
Finland, Espoo
Aalto University
Germany, Bonn
Max Planck Institute for Radio Astronomy
Kallunki, Juha
Finland, Espoo
Aalto University
De Vicente, Pablo
Spain, Leganes
National Astronomical Observatory
Kronschnabl, Gerhard
Germany, Frankfurt am Main
Federal Agency for Cartography and Geodesy
Haas, Rüdiger
Sweden, Onsala
Onsala Space Observatory
Quick, Jonathan F.H.
South Africa, Krugersdorp
Hartebeesthoek Radio Astronomy Observatory
MacCaferri, Giuseppe
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Colucci, G.
Italy, Rome
Agenzia Spaziale Italiana
Wang, Weihua
China, Shanghai
Shanghai Astronomical Observatory Chinese Academy of Sciences
Yang, Wenjun
China, Urumqi
Xinjiang Astronomical Observatory
Hao, Longfei
China, Beijing
Chinese Academy of Sciences
Statistics
Citations: 26
Authors: 16
Affiliations: 14
Identifiers
Doi:
10.1051/0004-6361/201322925
ISSN:
00046361
e-ISSN:
14320746
Study Design
Cohort Study