Bonn 2010 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 6: Experimente zur Gravitation 2
GR 6.1: Vortrag
Dienstag, 16. März 2010, 14:00–14:20, JUR K
STAR - Space Time Asymmetry Research — •Claus Braxmaier1, Thilo Schuldt1, Mohammed Allab1, Tim van Zoest2, Stephan Theil2, Ivanka Pelivan2, Sven Herrmann3, Claus Lämmerzahl3, Achim Peters4, Katharina Möhle4, Andreas Wicht4, Moritz Nagel4, Evgeny Kovalchuk4, Klaus Döringshoff4, and Hansjörg Dittus2 — 1Hochschule Konstanz (HTWG) — 2DLR, Institut für Raumfahrtsysteme, Bremen — 3ZARM Universität Bremen — 4Institut für Physik, Humboldt-Universität zu Berlin
STAR is a proposed satellite mission that aims for significantly improved tests of fundamental space-time symmetry and the foundations of special and general relativity. In total STAR comprises a series of five subsequent missions. The STAR1 mission will measure the constancy of the speed of light to one part in 1019 and derive the Kennedy Thorndike (KT) coefficient of the Mansouri-Sexl test theory to 7· 10−10. The KT experiment will be performed by comparison of an iodine standard with a highly stable cavity made from ultra low expansion (ULE) ceramics. With an orbital velocity of 7 km/s the sensitivity to a boost dependent violation of Lorentz invariance as modeled by the KT term in the Mansouri Sexl test theory or a Lorentz violating extension of the standard model (SME) will be significantly enhanced as compared to Earth based experiments. The low noise space environment will additionally enhance the measurement precision such that an overall improvement by a factor of 400 over current Earth based experiments is expected.