View : 20 Download: 5

CMB polarization impact on cosmological constraints

Title
CMB polarization impact on cosmological constraints
Authors
Das S.Linder E.V.
Ewha Authors
Eric V. Linder
Issue Date
2012
Journal Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998JCR Link
Citation
vol. 86, no. 6
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Cosmic microwave background (CMB) polarization encodes information not only on the early universe but also dark energy, neutrino mass, and gravity in the late universe through CMB lensing. Ground-based surveys, such as ACTpol, PolarBear, and SPTpol, significantly complement cosmological constraints from the Planck satellite, strengthening the CMB dark energy figure of merit and neutrino mass constraints by factors of 3-4. This changes the dark energy probe landscape. We evaluate the state of knowledge in 2017 from ongoing experiments including dark energy surveys (supernovae, weak lensing, galaxy clustering), fitting for dynamical dark energy, neutrino mass, and a modified gravitational growth index. Adding a modest strong lensing time delay survey improves those dark energy constraints by a further 32%, and an enhanced low-redshift supernova program improves them by 26%. © 2012 American Physical Society.
DOI
10.1103/PhysRevD.86.063520
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
Files in This Item:
CMB polarization impact on cosmological constraints.pdf(414.71 kB)Download
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE