A. Marcos-Caballero

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

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 best observed with surveys covering z∼0.6–1.0.

Integrated Sachs–Wolfe effect map recovery from NVSS and WMAP 7-yr data

We present a map of the cosmic microwave background (CMB) anisotropies induced by the late integrated Sachs–Wolfe effect. The map is constructed by combining the information of the Wilkinson Microwave Anisotropy Probe 7-yr CMB data and the NRAO VLA Sky Survey (NVSS) through a linear filter. This combination improves the quality of the map that would be obtained using information only from the large-scale structure data. In order to apply the filter, a given cosmological model needs to be assumed. In particular, we consider the standard � cold dark matter model. As a test of consistency, we show that the reconstructed map is in agreement with the assumed model, which is also favoured against a scenario where no correlation between the CMB and NVSS catalogue is considered.

On the recovery of ISW fluctuations using large-scale structure tracers and CMB temperature and polarization anisotropies

We acknowledge partial financial support from the Spanish Ministerio de Economia y Competitividad Project AYA2012-39475-C02-01 and Consolider-Ingenio 2010 CSD2010-00064.