The Jubilee ISW project – I. Simulated ISW and weak lensing maps and initial power spectra results

Watson, W A, Diego, J M, Gottlöber, S, Iliev, I T and et al, (2014) The Jubilee ISW project – I. Simulated ISW and weak lensing maps and initial power spectra results. Monthly Notices of the Royal Astronomical Society, 438 (1). pp. 412-425. ISSN 0035-8711

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Abstract

We present initial results from the Jubilee Integrated Sachs-Wolfe (ISW) project, which models the expected 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.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Astronomy Centre
Subjects: Q Science > QB Astronomy
Depositing User: Billy Wichaidit
Date Deposited: 29 Jun 2017 15:57
Last Modified: 29 Jun 2017 16:01
URI: http://sro.sussex.ac.uk/id/eprint/68894

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