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arXiv:0810.4921 (astro-ph)
[Submitted on 28 Oct 2008 (v1), last revised 30 Jan 2009 (this version, v3)]

Title:Constraints on Neutrino Masses from Weak Lensing

Authors:Kiyotomo Ichiki (1), Masahiro Takada (2), Tomo Takahashi (3) ((1) Nagoya U., (2) IPMU, U. Tokyo, (3) Saga U.)
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Abstract: The weak lensing (WL) distortions of distant galaxy images are sensitive to neutrino masses by probing the suppression effect on clustering strengths of total matter in large-scale structure. We use the latest measurement of WL correlations, the CFHTLS data, to explore constraints on neutrino masses. We find that, while the WL data alone cannot place a stringent limit on neutrino masses due to parameter degeneracies, the constraint can be significantly improved when combined with other cosmological probes, the WMAP 5-year (WMAP5) data and the distance measurements of type-Ia supernovae (SNe) and baryon acoustic oscillations (BAO). The upper bounds on the sum of neutrino masses are m_tot = 1.1, 0.76 and 0.54 eV (95% CL) for WL+WMAP5, WMAP5+SNe+BAO, and WL+WMAP5+SNe+BAO, respectively, assuming a flat LCDM model with finite-mass neutrinos. In deriving these constraints, our analysis includes the non-Gaussian covariances of the WL correlation functions to properly take into account significant correlations between different angles.
Comments: 16 pages, 10 figures. References added, accepted for publication in PRD
Subjects: Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:0810.4921 [astro-ph]
  (or arXiv:0810.4921v3 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0810.4921
Journal reference: Phys.Rev.D79:023520,2009
Related DOI: https://doi.org/10.1103/PhysRevD.79.023520

Submission history

From: Masahiro Takada [view email]
[v1] Tue, 28 Oct 2008 14:04:10 UTC (110 KB)
[v2] Sat, 1 Nov 2008 13:55:13 UTC (110 KB)
[v3] Fri, 30 Jan 2009 01:15:17 UTC (111 KB)
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