155 articles – 1965 Notices  [english version]
HAL : in2p3-00707026, version 1

Fiche détaillée  Récupérer au format
GW Notes 6 (2013) 4-110
eLISA: Astrophysics and cosmology in the millihertz regime
Pau Amaro-Seoane, Sofiane Aoudia, Stanislav Babak, P. Binétruy1, Emanuele Berti, A. Bohé2, C. Caprini3, Monica Colpi, Neil J. Cornish, Karsten Danzmann, J.-F. Dufaux1, Jonathan Gair, Oliver Jennrich, Philippe Jetzer, Antoine Klein, Ryan N. Lang, Alberto Lobo, Tyson Littenberg, Sean T. Mcwilliams, Gijs Nelemans, A. Petiteau1, 4, E.K. Porter1, Bernard F. Schutz, Alberto Sesana, Robin Stebbins, Tim Sumner, Michele Vallisneri, Stefano Vitale, M. Volonteri2, Henry Ward
LISA Collaboration(s)

This document introduces the exciting and fundamentally new science and astronomy that the European New Gravitational Wave Observatory (NGO) mission (derived from the previous LISA proposal) will deliver. The mission (which we will refer to by its informal name "eLISA") will survey for the first time the low-frequency gravitational wave band (about 0.1 mHz to 1 Hz), with sufficient sensitivity to detect interesting individual astrophysical sources out to z = 15. The eLISA mission will discover and study a variety of cosmic events and systems with high sensitivity: coalescences of massive black holes binaries, brought together by galaxy mergers; mergers of earlier, less-massive black holes during the epoch of hierarchical galaxy and black-hole growth; stellar-mass black holes and compact stars in orbits just skimming the horizons of massive black holes in galactic nuclei of the present era; extremely compact white dwarf binaries in our Galaxy, a rich source of information about binary evolution and about future Type Ia supernovae; and possibly most interesting of all, the uncertain and unpredicted sources, for example relics of inflation and of the symmetry-breaking epoch directly after the Big Bang. eLISA's measurements will allow detailed studies of these signals with high signal-to-noise ratio, addressing most of the key scientific questions raised by ESA's Cosmic Vision programme in the areas of astrophysics and cosmology. They will also provide stringent tests of general relativity in the strong-field dynamical regime, which cannot be probed in any other way. This document not only describes the science but also gives an overview on the mission design and orbits.
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
2 :  IAP - Institut d'Astrophysique de Paris
3 :  IPHT - Institut de Physique Théorique (ex SPhT)
4 :  Albert Einstein Institute
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique
Astrophysics - Cosmology and Extragalactic Astrophysics – Astrophysics - Galaxy Astrophysics – General Relativity and Quantum Cosmology