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• W2000045411 abstract "In the context of the study of the Integrated Sachs Wolfe effect (ISW), we construct a template of the projected density distribution up to $zsimeq 0.7$ by using the Luminous Galaxies (LGs) from the Sloan Digital Sky Survey DR8. We use a photo-z catalogue trained with more than a hundred thousand galaxies from BOSS in the SDSS DR8 imaging area. We consider two different LG samples whose selection matches that of SDSS-III/BOSS: the LOWZ sample ($zin [0.15,0.5]$) and the CMASS sample ($zin[0.4,0.7]$). When building the LG density maps we use the information from star density, survey footprint, seeing conditions, sky emission, dust extinction and airmass to explore the impact of these artifacts on the two LG samples. In agreement with previous studies, we find that the CMASS sample is particularly sensitive to Galactic stars, which dominate the contribution to the auto-angular power spectrum below $ell=7$. Other potential systematics affect mostly the low multipole range ($ellin[2,7]$), but leave fluctuations on smaller scales practically unchanged. The resulting power spectra in the multipole range $ellin[2,100]$ for the LOWZ, CMASS and LOWZ+CMASS samples are compatible with linear $Lambda$CDM expectations and constant bias values of $b=1.98 pm 0.11$, $2.08pm0.14$ and $1.88pm 0.11$, respectively, with no traces of non-Gaussianity: $f_{rm NL}^{rm local}=59pm 75$ at 95% confidence level for the full LOWZ+CMASS sample in the range $ellin[4,100]$. After cross-correlating WMAP-9yr data with the LOWZ+CMASS LG density field, the ISW signal is detected at the level of 1.62--1.69$,sigma$. While this result is in close agreement with predictions from Monte Carlo simulations in the concordance $Lambda$CDM model, it cannot rule out by itself an Einstein-de Sitter scenario, and has a moderately low signal compared to previous studies conducted on subsets of this LG sample." @default.
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• W2000045411 date "2013-12-21" @default.
• W2000045411 modified "2023-10-16" @default.
• W2000045411 title "The SDSS-III Baryonic Oscillation Spectroscopic Survey: constraints on the integrated Sachs–Wolfe effect" @default.
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• W2000045411 doi "https://doi.org/10.1093/mnras/stt2312" @default.
• W2000045411 hasPublicationYear "2013" @default.
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