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, J. Elvin-Poole, X. Fang, O. Friedrich, N. Kokron, M. Lima, V. Miranda, S. Pandey, A. Porredon, J. Sanchez, M. Aguena, S. Allam, J. AnnisS. 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. García-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, M. March, P. Melchior, F. Menanteau, R. Miquel, R. Morgan, J. Myles, R. L.C. Ogando, A. Palmese, F. Paz-Chinchón, A. A. Plazas Malagón, M. Rodriguez-Monroy, E. Sanchez, V. Scarpine, S. Serrano, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, E. Suchyta, G. Tarle, C. To

Research output: Contribution to journalArticlepeer-review


We perform an analysis in harmonic space of the Dark Energy Survey Year 1 Data (DES-Y1) galaxy clustering photometric 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.

Original languageEnglish (US)
Pages (from-to)5714-5724
Number of pages11
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
StatePublished - Aug 1 2021


  • Cosmology: observations
  • Large-scale structure of Universe

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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