Living Reviews in RelativityCurrent articles from Living Reviews in Relativity. Living Reviews in Relativity is a peer-refereed, solely online physics journal publishing invited reviews covering all areas of relativity research. Reviews are kept up to date by their authors. All reference information is collected into a searchable database. Living Reviews in Relativity is a free resource to the scientific community. Published by the Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Potsdam,...Low-Frequency Gravitational Wave Searches Using Spacecraft Doppler Tracking- January 24, 2006 This paper discusses spacecraft Doppler tracking, the current-generation detector technology used in the low-frequency (millihertz) gravitational wave band. In the Doppler method the earth and a distant spacecraft act as free test masses with a ground-based precision Doppler tracking system continuously monitoring the earth-spacecraft relative dimensionless velocity $2 Delta vc = Delta nunu_0$, where $Delta nu$ is the Doppler shift and $nu_0$ is the radio link carrier frequency. A gravitational.http://www.livingreviews.org/lrr-2006-1 |