Scientific conference in universities or research centers (Scientific conferences in universities or research centers)
Detection of bright multiply imaged quasars by GAIA
Finet, François
2011
 

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Keywords :
Gaia; Gravitational lensing statistics; Quasars
Abstract :
[en] Bright multiply imaged quasars offer unique tools to investigate the properties of the Universe as a whole (cosmological parameters), the astrophysical properties of the remote galaxies acting as deflectors (i.e. their mass, extinction law, ...) as well as the structure of the background sources (accretion disk, central engine, etc.). Multiply imaged quasars will represent the most easily identified signature of lensing in GAIA observations. Several thousands of such cases are expected with J <=20. Furthermore, the complete QSO catalog which will be built from the GAIA observations will be very attractive and unique in order to study QSO evolution, large scale structures, intervening absorbers, the inertial frame, ... The aim of this presentation is to report about a realistic estimate of the expected number of bright multiply imaged quasars that will be detected by GAIA.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Finet, François ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
Detection of bright multiply imaged quasars by GAIA
Publication date :
06 June 2011
Event name :
GREAT-ESF meeting: QSO Astrophysics, Fundamental physics, and Astrometric
Event organizer :
GREAT - ESF - Sicience faculty of the university of Porto
Event place :
Porto, Portugal
Event date :
from 06-06-2011 to 09-06-2011
Audience :
International
Name of the research project :
ARC - Actions de recherche concertées
Available on ORBi :
since 12 September 2011

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