Cosmic Shear in Harmonic Space from the Dark Energy Survey Year 1 Data: Compatibility with Configuration Space Results
Abstract
We perform a cosmic shear analysis in harmonic space using the first year of data collected by the Dark Energy Survey (DES-Y1). We measure the cosmic weak lensing shear power spectra using the Metacalibration catalogue and perform a likelihood analysis within the framework of CosmoSIS. We set scale cuts based on baryonic effects contamination and model redshift and shear calibration uncertainties as well as intrinsic alignments. We adopt as fiducial covariance matrix an analytical computation accounting for the mask geometry in the Gaussian term, including non-Gaussian contributions. A suite of 1200 lognormal simulations is used to validate the harmonic space pipeline and the covariance matrix. We perform a series of stress tests to gauge the robustness of the harmonic space analysis. Finally, we use the DES-Y1 pipeline in configuration space to perform a similar likelihood analysis and compare both results, demonstrating their compatibility in estimating the cosmological parameters , and . The methods implemented and validated in this paper will allow us to perform a consistent harmonic space analysis in the upcoming DES data.
Keywords
Cite
@article{arxiv.2111.07203,
title = {Cosmic Shear in Harmonic Space from the Dark Energy Survey Year 1 Data: Compatibility with Configuration Space Results},
author = {H. Camacho and F. Andrade-Oliveira and A. Troja and R. Rosenfeld and L. Faga and R. Gomes and C. Doux and X. Fang and M. Lima and V. Miranda and T. F. Eifler and O. Friedrich and M. Gatti and G. M. Bernstein and J. Blazek and S. L. Bridle and A. Choi and C. Davis and J. DeRose and E. Gaztanaga and D. Gruen and W. G. Hartley and B. Hoyle and M. Jarvis and N. MacCrann and J. Prat and M. M. Rau and S. Samuroff and C. Sánchez and E. Sheldon and M. A. Troxel and P. Vielzeuf and J. Zuntz and T. M. C. Abbott and M. Aguena and S. Allam and J. Annis and D. Bacon and E. Bertin and D. Brooks and D. L. Burke and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and R. Cawthon and M. Costanzi and L. N. da Costa and M. E. S. Pereira and J. De Vicente and S. Desai and H. T. Diehl and P. Doel and S. Everett and A. E. Evrard and I. Ferrero and B. Flaugher and P. Fosalba and D. Friedel and J. Frieman and J. García-Bellido and D. W. Gerdes and R. A. Gruendl and J. Gschwend and G. Gutierrez and S. R. Hinton and D. L. Hollowood and K. Honscheid and D. Huterer and D. J. James and K. Kuehn and N. Kuropatkin and O. Lahav and M. A. G. Maia and J. L. Marshall and P. Melchior and F. Menanteau and R. Miquel and R. Morgan and F. Paz-Chinchón and D. Petravick and A. Pieres and A. A. Plazas Malagón and K. Reil and M. Rodriguez-Monroy and E. Sanchez and V. Scarpine and M. Schubnell and S. Serrano and I. Sevilla-Noarbe and M. Smith and M. Soares-Santos and E. Suchyta and G. Tarle and D. Thomas and C. To and T. N. Varga and J. Weller and R. D. Wilkinson},
journal= {arXiv preprint arXiv:2111.07203},
year = {2022}
}
Comments
16 pages, 11 figures. This version matches the published one