Scientific Objectives of Einstein Telescope
  The advanced interferometer network will herald a new era in observational astronomy. There is a very strong science case to go beyond the advanced detector network and build detectors that operate in a frequency range from 1 Hz-10 kHz, with sensitivity a factor ten better in amplitude. Such detectors will be able to probe a range of topics in nuclear physics, astronomy, cosmology and fundamental physics, providing insights into many unsolved problems in these areas. 
B. Sathyaprakash, M. Abernathy, F. Acernese, P. Ajith, B. Allen, P.   Amaro-Seoane, N. Andersson, S. Aoudia, K. Arun, P. Ast...
gr-qc astro-ph.CO