COSMIC LENS
Financiado
Delivering on the Promise of Measuring Dark Energy from Cosmic Lensing
The apparent gravitational distortion of distant galaxies, ‘cosmic lensing’, allows us to map dark matter and hence unveil the nature of the mysterious dark energy. I will develop novel approaches to cosmic lensing and use these t...
The apparent gravitational distortion of distant galaxies, ‘cosmic lensing’, allows us to map dark matter and hence unveil the nature of the mysterious dark energy. I will develop novel approaches to cosmic lensing and use these to place constraints on dark energy using the Dark Energy Survey (DES). Themes 1 and 2 address key systematic effects crucial for the extraction of cosmology in theme 3. Theme 1: The lensing community has spent two decades trying to find the perfect galaxy shape measurement method. We will take a unique approach by translating a technique common in particle physics and the CMB to lensing: we will simulate images matched to observed galaxy positions and shapes, and vary lensing to accurately calibrate shapes. We will make the code public and use it to produce the final public DES shear catalogues. Theme 2: We will exploit my innovative and successful program of coordinated international challenges from shear measurement and apply it to mitigating galaxy intrinsic alignments (IA). I have shown that knowledge of IAs is essential for leveraging the potential of cosmic lensing for cosmology and described a mitigation method, but this needs to be tested on simulations. I will coordinate international IA simulation efforts and identify the optimum method for removing intrinsic alignments and apply it to the DES data. Theme 3: We have developed a skeleton software framework for cosmology, CosmoSIS. We will write modules for cosmology from imaging data incorporating the main systematic effects, and use CosmoSIS to produce the final constraints on cosmology from DES lensing. We will incorporate constraints on sterile neutrinos from particle physics for the first time. If the current tensions between cosmic lensing the CMB are confirmed by this work we will have discovered the need for new physics. Furthermore, the work in this proposal will place us in prime position to exploit the main cosmology surveys of the next decade (LSST, Euclid, WFIRST).
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Duración del proyecto: 60 meses
Fecha Inicio: 2016-04-13
Fecha Fin: 2021-04-30
Fecha Fin: 2021-04-30
Línea de financiación: concedida
El organismo H2020 notifico la concesión del proyecto el día 2021-04-30
Línea de financiación objetivo
El proyecto se financió a través de la siguiente ayuda:
ERC-CoG-2015:
ERC Consolidator Grant
Cerrada
hace 9 años
Presupuesto
El presupuesto total del proyecto asciende a
2M€
Líder del proyecto
THE UNIVERSITY OF MANCHESTER
No se ha especificado una descripción o un objeto social para esta compañía.
Perfil tecnológico
TRL
4-5
Perfil tecnológico
TRL
4-5
438.69K€ |
Participante