3D weak gravitational lensing of the CMB and galaxies
File(s)
Published version
OA Location
Author(s)
Kitching, TD
Heavens, AF
Das, S
Type
Journal Article
Abstract
In this paper, we present a power spectrum formalism that combines the full 3D information
from the galaxy ellipticity field, with information from the cosmic microwave background
(CMB). We include in this approach galaxy cosmic shear and galaxy intrinsic alignments,
CMB deflection, CMB temperature, and CMB polarization data; including the interdatum
power spectra between all quantities. We apply this to forecasting cosmological parameter
errors for CMB and imaging surveys and show that the additional covariance between the
CMB and ellipticity measurements can improve dark energy equation of state measurements
by 30 per cent. We present predictions for Euclid-like, Planck, ACTPoL, and CoRE-like experiments
and show that the combination of cosmic shear and the CMB, from Euclid-like and
CoRE-like experiments, could in principle measure the sum of neutrino masses with an error
of 0.003 eV, and the dark energy equation of state with an error on w0 of less than 0.02.
from the galaxy ellipticity field, with information from the cosmic microwave background
(CMB). We include in this approach galaxy cosmic shear and galaxy intrinsic alignments,
CMB deflection, CMB temperature, and CMB polarization data; including the interdatum
power spectra between all quantities. We apply this to forecasting cosmological parameter
errors for CMB and imaging surveys and show that the additional covariance between the
CMB and ellipticity measurements can improve dark energy equation of state measurements
by 30 per cent. We present predictions for Euclid-like, Planck, ACTPoL, and CoRE-like experiments
and show that the combination of cosmic shear and the CMB, from Euclid-like and
CoRE-like experiments, could in principle measure the sum of neutrino masses with an error
of 0.003 eV, and the dark energy equation of state with an error on w0 of less than 0.02.
Date Issued
2015-05-11
Date Acceptance
2015-01-27
Citation
Monthly Notices of the Royal Astronomical Society, 2015, 449 (2), pp.2205-2214
ISSN
1365-2966
Publisher
Oxford University Press (OUP)
Start Page
2205
End Page
2214
Journal / Book Title
Monthly Notices of the Royal Astronomical Society
Volume
449
Issue
2
Copyright Statement
© 2015 The Authors
Published by Oxford University Press on behalf of the Royal Astronomical Society
Published by Oxford University Press on behalf of the Royal Astronomical Society
Sponsor
Imperial College Trust
Grant Number
N/A
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
gravitational lensing: weak
cosmological parameters
DARK ENERGY SURVEY
COSMIC SHEAR
INTRINSIC ALIGNMENTS
POWER SPECTRUM
IMAGE-ANALYSIS
MATTER
CONSTRAINTS
CHALLENGE
COSMOLOGY
BARYONS
Publication Status
Published