Karlsruhe 2011 – wissenschaftliches Programm

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GR: Fachverband Gravitation und Relativitätstheorie

GR 3: Experimentelle Tests

GR 3.3: Vortrag

Dienstag, 29. März 2011, 14:40–15:00, 20.40: 101

(contribution withdrawn) High precision numerical modelling of solar radiation and thermal recoil pressure with application to Pioneer 10 and Rosetta — •Benny Rievers and Claus Lämmerzahl — Zentrum für angewandte Raumfahrttechnologie und Mikrogravitation (ZARM), Universität Bremen, Am Fallturm, 28359 Bremen

For modern space mission a precise knowledge of non-gravitational disturbances acting on the spacecraft orbit can be crucial to the mission success. Among those so called "small forces" the influence of solar radiation pressure (SRP) and thermal recoil pressure (TRP) plays a central role. While SRP is the major non-gravitational disturbance in proximity of Earth and Sun, TRP is dominating for deep space mission with large heliocentric distances. We developed numerical modelling methods for the high precision evalutaion of TRP and SRP. These approaches will be presented and the computation process will be shown exemplarily for the space missions Pioneer 10 and ESAs current deep space mission Rosetta. The results will be discussed with regard to the well known Pioneer and Fly-By anomalies.