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COSMICLENS SIGNED

Cosmology with Strong Gravitational Lensing

Total Cost €

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EC-Contrib. €

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Partnership

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 COSMICLENS project word cloud

Explore the words cloud of the COSMICLENS project. It provides you a very rough idea of what is the project "COSMICLENS" about.

delay    modular    chain    coi    courbin    regularization    2    cosmology    hydro    degeneracies    universe    observational    physics    suitable    accelerating    monitoring    photometric    galaxy    lens    light    repulsive    modeling    answering    led    simulation    supernovae    h0    confirm    tension    revealed    stage    model    models    lt    refute    feasible    framework    parameteric    probe    1    questions    energy    distance    sparse    h0licow    yield    hubble    techniques    phases    first    secure    precision    scales    cosmograil    fom    independent    capitalizing    implementing    exploits    truly    expansion    time    acceleration    few    mock    discovery    1920s    calibration    boost    measuring    precise    distances    reconstructed    simulations    pi    suyu    quasars    90s    revolutionized    einstein    td    successful    40    distributions    constant    cosmological    probes    packages    pathfinders    so    methodology    cadence    mass    dark    fundamental    lensed    transform    flexible    form    surveys    ia    tds    enhancements    single    discovering    source   

Project "COSMICLENS" data sheet

The following table provides information about the project.

Coordinator		 ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE 

Organization address
address: BATIMENT CE 3316 STATION 1
city: LAUSANNE
postcode: 1015
website: www.epfl.ch

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.
 Coordinator Country Switzerland [CH]
 Total cost 3˙129˙689 €
 EC max contribution 3˙129˙689 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-ADG
 Funding Scheme ERC-ADG
 Starting year 2018
 Duration (year-month-day) from 2018-10-01   to  2023-09-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE CH (LAUSANNE) coordinator 2˙431˙884.00
2    UNIVERSITE DE LIEGE BE (LIEGE) participant 697˙805.00

Map

 Project objective

Measuring cosmological distances has revolutionized our understanding of the Universe, and is still doing so! Early work in the 1920s led to the discovery of the expansion of the Universe. More precise distance measurements in the 90s with type-Ia supernovae revealed that this expansion is accelerating, with crucial consequences in cosmology and physics. Is the acceleration due to some repulsive form of dark energy? To Einstein's cosmological constant? Do we need to consider new physics? Answering these fundamental questions requires a precise measurement of the Hubble parameter, H0, which is my goal using the time delay (TD) method in strongly lensed quasars.

The TD method exploits well-known physics on galaxy-scales. It is one of the very few techniques that can yield H0 to <2% using a single methodology. It involves no calibration, and is truly independent of any other cosmological probe. Capitalizing on the successful pathfinders COSMOGRAIL (PI: Courbin) and H0LiCOW (PI: Suyu, CoI: Courbin) time has come to fully exploit TDs with an observational, modeling and technical boost, organized in 2 phases.

Phase I will secure H0 to 2% using the current chain of analysis, with feasible enhancements beyond the current state-of the-art. This will confirm or refute the tension seen between H0 values with different cosmological probes. Phase II targets 1% precision, improving the FoM of Stage-IV cosmological surveys by 40%. The 4 proposed Work Packages can transform the field within the next 5 years by 1- implementing the first high-cadence photometric monitoring of lensed quasars to measure 50 new TDs, 2- providing new flexible non-parameteric lens models based on sparse regularization of the reconstructed source and lens mass/light distributions, 3- providing a modular end-to-end simulation framework to mock lensed systems from hydro-simulations and to evaluate in detail the impact model degeneracies on H0, 4- discovering new suitable lensed quasars in current surveys.

 Deliverables

List of deliverables.
Data Management Plan Open Research Data Pilot 2019-07-22 16:48:44

Take a look to the deliverables list in detail:  detailed list of COSMICLENS deliverables.

 Publications

year authors and title journal last update
List of publications.
2019 Sluse, Dominique
Strong lensing studies with the 3.6-m Devasthal Optical Telescope: opportunities and challenges
published pages: , ISSN: , DOI: 10.25518/0037-9565.8777 		Strong lensing studies with the 3.6-m Devasthal Optical Telescope: opportunities and challenges. Bulletin de la Societe Royale des Sciences de Liege, 88, 152-157.Liège, BelgiumSociété Royale des Sciences de Liege. (2019). 1 2020-03-05
2019 D Sluse, C E Rusu, C D Fassnacht, A Sonnenfeld, J Richard, M W Auger, L Coccato, K C Wong, S H Suyu, T Treu, A Agnello, S Birrer, V Bonvin, T Collett, F Courbin, S Hilbert, L V E Koopmans, O Tihhanova, P J Marshall, G Meylan, A J Shajib, J Annis, S Avila, E Bertin, D Brooks, E Buckley-Geer, D L Burke, A Carnero Rosell, M Carrasco Kind, J Carretero, F J Castander, L N da Costa, J De Vicente, S
H0LiCOW – X. Spectroscopic/imaging survey and galaxy-group identification around the strong gravitational lens system WFI 2033−4723
published pages: 613-633, ISSN: 0035-8711, DOI: 10.1093/mnras/stz2483 		Monthly Notices of the Royal Astronomical Society 490/1 2020-03-05

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