Fiducial-Cosmology-dependent systematics for the DESI 2024 Full-Shape Analysis
R. Gsponer, S. Ramirez-Solano, F. Rodríguez-Martínez, M. Vargas-Magaña, S. Novell-Masot, N. Findlay, H. Gil-Marín, P. Zarrouk, S. Nadathur, A. Rocher, S. Briede… 展开作者
R. Gsponer, S. Ramirez-Solano, F. Rodríguez-Martínez, M. Vargas-Magaña, S. Novell-Masot, N. Findlay, H. Gil-Marín, P. Zarrouk, S. Nadathur, A. Rocher, S. Brieden, A. Pérez-Fernández, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, A. Cuceu, A. de la Macorra, A. de Mattia, Arjun Dey, P. Doel, A. Font-Ribera, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, J. Guy, C. Hahn, H. K. Herrera-Alcantar, K. Honscheid, C. Howlett, D. Huterer, M. Ishak, R. Joyce, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, O. Lahav, C. Lamman, M. Landriau, L. Le Guillou, M. E. Levi, C. Magneville, M. Manera, A. Meisner, R. Miquel, J. Moustakas, E. Mueller, N. Palanque-Delabrouille, W. J. Percival, F. Prada, I. Pérez-Ràfols, G. Rossi, L. Samushia, E. Sanchez, D. Schlegel, M. Schubnell, H. Seo, J. Silber, D. Sprayberry, G. Tarlé, B. A. Weaver, C. Zhao, R. Zhou, H. Zou
备注：
Matches published version, a short discussion was added to Section 6.1.1 and 7
We assess the impact of the fiducial cosmology choice on cosmological inference from full-shape (FS) fits of the galaxy power spectrum in the DESI 2024 Data Release 1 (DR1). Using a suite of AbacusSummit DR1 mock catalogues based on the Planck 2018 best-fit cosmology, we quantify potential systematic shifts introduced by analysing the data under five secondary cosmologies - featuring variations in matter density, thawing dark energy, higher effective number of neutrino species, reduced clustering amplitude, and the DESI DR1 BAO best-fit $w_0w_a$CDM cosmology - relative to DESI's baseline Planck 2018 cosmology. We investigate two complementary FS analysis approaches: full-modelling (FM) and ShapeFit (SF), each with distinct sensitivities to the assumed fiducial model. Across all tracers, we find for FM that systematic shifts induced by fiducial cosmology mismatches remain well below the DESI DR1 statistical uncertainties, with maximum deviations of 0.22$σ_\mathrm{DR1}$ in $Λ$CDM scenarios and 0.12$σ_\mathrm{DR1+SN}$ when including SN Ia mock data in extended $w_0w_a$CDM fits. For SF, the shifts in the compressed parameters remain below $0.45σ_\mathrm{DR1}$ for all tracers and cosmologies.
Impact of fiducial cosmology in model-agnostic cosmological inference with the BAO feature
Inter-University Centre for Astronomy & Astrophysics（大学间天文学与天体物理中心）；Center for Particle Cosmology, University of Pennsylvania（宾夕法尼亚大学粒子宇宙学中心）；The Abdus Salam International Center for Theoretical Physics（阿卜杜斯·萨拉姆国际理论物理中心）
Cosmo-Learn: code for learning cosmology using different methods and mock data
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理研究所（爱因斯坦研究所））；Asia Pacific Center for Theoretical Physics（亚太理论物理中心）；Instituto de Física y Astronomía, Universidad de Valparaíso（瓦尔帕莱索大学物理与天文学研究所）；Institute of Space Sciences and Astronomy, University of Malta（马耳他大学空间科学与天文研究所）；Department of Physics, University of Malta（马耳他大学物理系）；National Institute of Physics, University of the Philippines Diliman（菲律宾大学迪利曼分校国立物理研究所）；Philippine Space Agency（菲律宾太空局）；Research Center for Theoretical Physics, Central Visayan Institute Foundation（中米沙鄢学院基金会理论物理研究中心）
On the cosmology dependence of the cluster weak-lensing mass bias
LMU Munich（慕尼黑大学）；INAF-Osservatorio Astronomico di Trieste（意大利天文学研究所的里雅斯特天文台）；Max-Planck-Institut für Astrophysik（马克斯·普朗克天体物理研究所）；Universität Innsbruck（因斯布鲁克大学）
BAO miscalibration cannot rescue late-time solutions to the Hubble tension
University of Trento（特伦托大学）；Trento Institute for Fundamental Physics and Applications (TIFPA)-INFN（特伦托基础物理与应用研究所（TIFPA）-意大利国家核物理研究所）；Istanbul Technical University（伊斯坦布尔技术大学）；University of Sheffield（谢菲尔德大学）；Universidade Federal do Espírito Santo（圣埃斯皮里图联邦大学）；INAF – Osservatorio Astronomico di Trieste（意大利国家天体物理研究所的里雅斯特天文台）；IFPU – Institute for Fundamental Physics of the Universe（宇宙基础物理研究所）；University of Ioannina（约阿尼纳大学）
Angular Baryon Acoustic Oscillations with DESI DR1
Universitat de Barcelona（巴塞罗那大学）；Aix Marseille Université（艾克斯-马赛大学）；CNRS/IN2P3（法国国家科学研究中心/国家核物理与粒子物理研究所）；CPPM（马赛粒子物理中心）；Institut d’Estudis Espacials de Catalunya（加泰罗尼亚空间研究所）；Institució Catalana de Recerca i Estudis Avançats（加泰罗尼亚高级研究学院）
eROSITA cosmology with galaxy groups: Hot gas budget out to the virial radius
University of Helsinki（赫尔辛基大学）；University of Geneva（日内瓦大学）；University of Tartu（塔尔图大学）；Estonian Academy of Sciences（爱沙尼亚科学院）；INAF-IASF Milano（意大利国家天体物理研究所米兰分院）；Center for Astrophysics | Harvard & Smithsonian（哈佛-史密森尼天体物理中心）；INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano（意大利国家天体物理研究所空间与宇宙物理米兰研究所）
Probing Cosmic Curvature with Fast Radio Bursts and DESI DR2
Universidade Federal do Espírito Santo (UFES)（埃斯皮里托圣托联邦大学）；Instituto Argentino de Radioastronomía（阿根廷射电天文研究所）；University of Cape Town（开普敦大学）；Universidad Nacional de La Plata（拉普拉塔国立大学）
