Galaxy clustering in harmonic space from the dark energy survey year 1 data: compatibility with real-space results
Abstract
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 2021
- DOI:
- 10.1093/mnras/stab1642
- arXiv:
- arXiv:2103.14190
- Bibcode:
- 2021MNRAS.505.5714A
- Keywords:
-
- cosmology: observations;
- large-scale structure of Universe;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 11 pages, 13 figures