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Strong lensing studies with the 3.6-m Devasthal Optical Telescope: opportunities and challenges
Sluse, Dominique
2019In Bulletin de la Société Royale des Sciences de Liège, 88, p. 152-157
Peer reviewed
 

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Keywords :
gravitational lensing; strong lensing; time delay; cosmology
Abstract :
[en] Strongly-lensed quasars and active galactic nuclei (AGN), namely active galaxies that appear multiply imaged due to a foreground lensing galaxy, are exceptional astrophysical tools that may be used to probe the expansion rate of the Universe, study the evolution of galaxies and of their dark matter content over cosmic time, and zoom in into the structure of AGNs. We are entering a new era in observational astrophysics, no longer limited by the number of accessible targets, but by our ability to carry out follow-up observations. We list several science cases where the DOT and other Belgo-Indian telescopes may provide crucial high-quality data: (1) Photometric monitoring of strong lenses for cosmography (2) Confirmation of new strongly-lensed candidates in the era of big surveys (3) Advanced study of the structure of AGN using the technique of gravitational microlensing. For each of these topics, we provide a brief scientific overview of the technique and scientific question, and quantify the observational requirements for successful programs. <P />
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Sluse, Dominique  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Language :
English
Title :
Strong lensing studies with the 3.6-m Devasthal Optical Telescope: opportunities and challenges
Publication date :
01 October 2019
Event name :
2nd BINA workshop: BINA as an expanding international collaboration Date(s) de la manifestation :
Event place :
Brussels, Belgium
Event date :
from 9-10-2018 to 12-10-2018
Audience :
International
Journal title :
Bulletin de la Société Royale des Sciences de Liège
ISSN :
0037-9565
eISSN :
1783-5720
Publisher :
Société Royale des Sciences de Liege, Liège, Belgium
Volume :
88
Pages :
152-157
Peer reviewed :
Peer reviewed
European Projects :
H2020 - 787886 - COSMICLENS - Cosmology with Strong Gravitational Lensing
Funders :
CE - Commission Européenne [BE]
Available on ORBi :
since 31 December 2019

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