mSTAR: Testing special relativity in space using high performance optical frequency references

Autor: John A. Lipa, Shailendhar Saraf, Robert L. Byer, Thilo Schuldt, Achim Peters, Badr Alsuwaidan, Claus Braxmaier, Turki Al Saud, Si Tan, Belgacem Jaroux, Klaus Döringshoff, Hansjörg Dittus, John Hanson, Grant D. Cutler, Sven Herrmann, Alberto Stochino, Claus Lämmerzahl, Abdul Alfauwaz, Simon P. Worden, Ulrich Johann, Norman Gürlebeck, Sasha Buchman, Abdulaziz Alhussien
Rok vydání: 2015
Předmět:
Zdroj: 2015 Joint Conference of the IEEE International Frequency Control Symposium & the European Frequency and Time Forum.
DOI: 10.1109/fcs.2015.7138789
Popis: The proposed space mission mini Space-Time Asymmetry Research (mSTAR) aims at a test of special relativity by performing a clock-clock comparison experiment in a low-Earth orbit. Using clocks with instabilies at or below the 1·10−15 level at orbit time, the Kennedy-Thorndike coefficient will be measured with an up to two orders of magnitude higher accuracy than the current limit set by ground-based experiments. In the current baseline design, mSTAR utilizes an optical absolute frequency reference based on molecular iodine and a length-reference based on a high-finesse optical cavity. Current efforts aim at a space compatible design of the two clocks and improving the long-term stability of the cavity reference. In an ongoing Phase A study, the feasibility of accommodating the experiment on a SaudiSat 4 bus is investigated.
Databáze: OpenAIRE