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arxiv: 2103.14190 · v2 · pith:LVXO5GJ2new · submitted 2021-03-26 · 🌌 astro-ph.CO

Galaxy Clustering in Harmonic Space from the Dark Energy Survey Year 1 Data: Compatibility with Real-Space Results

F. Andrade-Oliveira , H. Camacho , L. Faga , R. Gomes , R. Rosenfeld , A. Troja , O. Alves , C. Doux
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J. Elvin-Poole X. Fang N. Kokron M. Lima V. Miranda S. Pandey A. Porredon J. Sanchez M. Aguena S. Allam J. Annis S. Avila E. Bertin D. Brooks D. L. Burke M. Carrasco Kind J. Carretero R. Cawthon C. Chang A. Choi M. Costanzi M. Crocce L. N. da Costa M. E. S. Pereira S. Desai H. T. Diehl P. Doel A. Drlica-Wagner S. Everett A. E. Evrard I. Ferrero J. Frieman J. Garc\'ia-Bellido E. Gaztanaga D. W. Gerdes D. Gruen R. A. Gruendl S. R. Hinton D. L. Hollowood B. Jain D. J. James N. Kuropatkin O. Lahav N. MacCrann M. A. G. Maia P. Melchior F. Menanteau R. Miquel R. Morgan J. Myles R. L. C. Ogando A. Palmese F. Paz-Chinch\'on A. A. Plazas Malag\'on M. Rodriguez-Monroy E. Sanchez V. Scarpine S. Serrano I. Sevilla-Noarbe M. Smith M. Soares-Santos E. Suchyta G. Tarle C. To the DES Collaboration
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We perform an analysis in harmonic space of the Dark Energy Survey Year 1 Data (DES-Y1) galaxy clustering data using products obtained for the real-space analysis. We test our pipeline with a suite of lognormal simulations, which are used to validate scale cuts in harmonic space as well as to provide a covariance matrix that takes into account the DES-Y1 mask. We then apply this pipeline to DES-Y1 data taking into account survey property maps derived for the real-space analysis. We compare with real-space DES-Y1 results obtained from a similar pipeline. We show that the harmonic space analysis we develop yields results that are compatible with the real-space analysis for the bias parameters. This verification paves the way to performing a harmonic space analysis for the upcoming DES-Y3 data.

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  1. Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing

    astro-ph.CO 2021-05 accept novelty 6.0

    DES Y3 3x2pt analysis constrains S8=0.776±0.017 and Ωm=0.339±0.032 in flat ΛCDM, consistent with Planck CMB results at p=0.13-0.48.