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Rosetta Radio Science Investigations (RSI)

Paetzold, Martin (author)
Haeusler, Bernd (author)
Aksnes, Kaare (author)
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Anderson, John D. (author)
Asmar, Sami W. (author)
Barriot, Jean-Pierre (author)
Bird, Michael K. (author)
Boehnhardt, Hermann (author)
Eidel, Werner (author)
Gruen, Eberhardt (author)
Ip, Wing H. (author)
Marouf, Essam (author)
Morley, Trevor (author)
Neubauer, Fritz M. (author)
Rickman, Hans (author)
Uppsala universitet,Astronomiska observatoriet
Thomas, Nicolas (author)
Tsurutani, Bruce T. (author)
Wallis, Max K. (author)
Wickramasinghe, N. C. (author)
Mysen, Eirik (author)
Olson, Oystein (author)
Remus, Stefan (author)
Tellmann, Silvia (author)
Andert, Thomas (author)
Carone, Ludmila (author)
Fels, Markus (author)
Stanzel, Christina (author)
Audenrieth-Kersten, Iris (author)
Gahr, Alexander (author)
Mueller, Anna-Liane (author)
Stupar, Dusan (author)
Walter, Christina (author)
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 (creator_code:org_t)
2007-02-06
2007
English.
In: Space Science Reviews. - : Springer Science and Business Media LLC. - 0038-6308 .- 1572-9672. ; 128:1-4, s. 599-627
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Research review (peer-reviewed)
Abstract Subject headings
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  • The Rosetta spacecraft has been successfully launched on 2nd March 2004 to its new target comet 67 P/Churyurnov-Gerasimenko. The science objectives of the Rosetta Radio Science Investigations (RSI) experiment address fundamental aspects of cometary physics such as the mass and bulk density of the nucleus, its gravity field, its interplanetary orbit perturbed by nongravitational forces, its size and shape, its internal structure, the composition and roughness of the nucleus surface, the abundance of large dust grains, the plasma content in the coma and the combined dust and gas mass flux. The masses of two asteroids, Steins and Lutetia, shall be determined during flybys in 2008 and 2010. respectively. Secondary objectives are the radio sounding of the solar corona during the superior conjunctions of the spacecraft with the Sun during the cruise phase. The radio carrier links of the spacecraft Telemetry, Tracking and Command (TT&C) subsystem between the orbiter and the Earth will be used for these investigations. An Ultrastable oscillator (USO) connected to both transponders of the radio subsystem serves as a stable frequency reference source for both radio downlinks at X-band (8.4 GHz) and S-band (2.3 GHz) in the one-way mode. The Simultaneous and coherent dual-frequency downlinks via the High Gain Antenna (HGA) permit separation of contributions from the classical Doppler shift and the dispersive media effects caused by the motion of the spacecraft with respect to the Earth and the propagation of the signals through the dispersive media, respectively.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

Rosetta
comets
67 P/Churyumov-Gerasimenko
radio-science
Physics
Fysik

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