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The jubilee ISW project - I. Simulated ISW and weak lensing maps and initial power spectra results

AuthorsWatson, William A.; Diego, José María ; Gottlöber, Stefan; Iliev, Ilian T.; Knebe, Alexander; Martínez-González, Enrique ; Yepes, Gustavo; Barreiro, R. Belén ; González-Nuevo, J. ; Hotchkiss, S.; Marcos-Caballero, A. ; Nadathur, S.; Vielva, P.
Issue Date2014
PublisherOxford University Press
Royal Astronomical Society
CitationMonthly Notices of the Royal Astronomical Society 438(1): 412-425 (2014)
AbstractWe present initial results from the Jubilee Integrated Sachs-Wolfe (ISW) project, which models the expected Λ cold dark matter ISW effect in the Jubilee simulation. The simulation volume is (6 h-1 Gpc)3, allowing power on very large scales to be incorporated into the calculation. Haloes are resolved down to a mass of 1.5 × 1012 h-1 M⊙, which allows us to derive a catalogue of mock Luminous Red Galaxies (LRGs) for cross-correlation analysis with the ISW signal. We find the ISW effect observed on a projected sky to grow stronger at late times with the evolution of the ISW power spectrum matching expectations from linear theory. Maps of the gravitational-lensing effect are calculated using the same potential as for the ISW. We calculate the redshift dependence of the ISW-LRG cross-correlation signal for a full-sky survey with no noise considerations. For ℓ < 30, the signal is strongest for lower redshift bins (z ∼ 0.2-0.5), whereas for ℓ > 30, the signal is best observed with surveys covering z ~ 0.6-1.0. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Publisher version (URL)http://dx.doi.org/10.1093/mnras/stt2208
Identifiersdoi: 10.1093/mnras/stt2208
issn: 0035-8711
e-issn: 1365-2966
Appears in Collections:(IFCA) Artículos
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