Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 450, Issue 3, Pages 2888-2902Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv784
Keywords
gravitational lensing: weak; dark matter; large-scale structure of Universe
Categories
Funding
- ICRA/CBPF/MCTI
- FINEP
- FAPERJ [E-26/110.516/2-2012]
- Laboratrio Interinstitucional de e-Astronomia (LIneA)
- NSFC of China [11333001, 11173001, 11033005, 11103011]
- Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences [XDB09000000]
- Marie Curie International Incoming Fellowship within the 7th European Community Framework Programme
- NSFC [11333001, 11103012, 11303033]
- Shanghai Research grant of STCSM [13JC1404400]
- Youth Innovation Promotion Association of CAS
- World Premier International Research Centre Initiative (WPI Initiative), MEXT, Japan
- ERC advanced grant LIDA
- CNRS
- CAPES Foundation [12174-13-0]
- CNPq [486586/2013-8]
- Ministry of Finance of Peoples Republic of China [ZDYZ2008-2]
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We derived constraints on cosmological parameters using weak lensing peak statistics measured on the similar to aEuro parts per thousand 130 deg(2) of the Canada-France-Hawaii Telescope Stripe 82 Survey. This analysis demonstrates the feasibility of using peak statistics in cosmological studies. For our measurements, we considered peaks with signal-to-noise ratio in the range of nu = [3, 6]. For a flat I > cold dark matter model with only (Omega(m), sigma(8)) as free parameters, we constrained the parameters of the following relation I (8) pound = sigma(8)(Omega(m)/0.27)(alpha) to be I (8) pound = 0.82 +/- 0.03 and alpha = 0.43 +/- 0.02. The alpha value found is considerably smaller than the one measured in two-point and three-point cosmic shear correlation analyses, showing a significant complement of peak statistics to standard weak lensing cosmological studies. The derived constraints on (Omega(m), sigma(8)) are fully consistent with the ones from either WMAP9 or Planck. From the weak lensing peak abundances alone, we obtained marginalized mean values of tex-math id=TM0002 notation=LaTeX$\Omega _{\rm m}=0.38<^>{+0.27}_{-0.24}$/tex-math and sigma(8) = 0.81 +/- 0.26. Finally, we also explored the potential of using weak lensing peak statistics to constrain the mass-concentration relation of dark matter haloes simultaneously with cosmological parameters.
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