Galaxy clustering in harmonic space from the dark energy survey year 1 data: compatibility with real-space results

Andrade-Oliveira, F.; Camacho, H.; Faga, L.; Gomes, R.; Rosenfeld, R.; Troja, A.; Alves, O.; Doux, C.; Elvin-Poole, J.; Fang, X.; Friedrich, O.; Kokron, N.; Lima, M.; Miranda, V.; Pandey, S.; Porredon, A.; Sanchez, J.; Aguena, M.; Allam, S.; Annis, J.; Avila, S.; Bertin, E.; Brooks, D.; Burke, D. L.; Carrasco Kind, M.; Carretero, J.; Cawthon, R.; Chang, C.; Choi, A.; Costanzi, M.; Crocce, M.; da Costa, L. N.; Pereira, M. E. S.; Desai, S.; Diehl, H. T.; Doel, P.; Drlica-Wagner, A.; Everett, S.; Evrard, A. E.; Ferrero, I.; Frieman, J.; García-Bellido, J.; Gaztanaga, E.; Gerdes, D. W.; Gruen, D.; Gruendl, R. A.; Hinton, S. R.; Hollowood, D. L.; Jain, B.; James, D. J.; Kuropatkin, N.; Lahav, O.; Maccrann, N.; Maia, M. A. G.; March, M.; Melchior, P.; Menanteau, F.; Miquel, R.; Morgan, R.; Myles, J.; Ogando, R. L. C.; Palmese, A.; Paz-Chinchón, F.; Plazas Malagón, A. A.; Rodriguez-Monroy, M.; Sanchez, E.; Scarpine, V.; Serrano, S.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Suchyta, E.; Tarle, G.; To, C.; To, C.; Collaboration, Des

doi:10.1093/mnras/stab1642

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....