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相关论文: Dark Energy Survey Year 3: Blue Shear

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Galaxy clusters provide a unique probe of the late-time cosmic structure and serve as a powerful independent test of the $\Lambda$CDM model. This work presents the first set of cosmological constraints derived with ~16,000 optically…

Type Ia supernovae (SNe Ia) have been essential for probing the nature of dark energy; however, most SN analyses rely on the same low-redshift sample, which may lead to shared systematics. In a companion paper (arXiv:2508.10878), we…

We present high signal-to-noise measurements of three-point shear correlations and the third moment of the mass aperture statistic using the first 3 years of data from the Dark Energy Survey. We additionally obtain the first measurements of…

We present angular diameter measurements obtained by measuring the position of Baryon Acoustic Oscillations (BAO) in an optimised sample of galaxies from the first three years of Dark Energy Survey data (DES Y3). The sample consists of 7…

宇宙学与河外天体物理 · 物理学 2022-03-21 DES Collaboration , T. M. C. Abbott , M. Aguena , S. Allam , F. Andrade-Oliveira , J. Asorey , S. Avila , G. M. Bernstein , E. Bertin , A. Brandao-Souza , D. Brooks , D. L. Burke , J. Calcino , H. Camacho , A. Carnero Rosell , D. Carollo , M. Carrasco Kind , J. Carretero , F. J. Castander , R. Cawthon , K. C. Chan , A. Choi , C. Conselice , M. Costanzi , M. Crocce , L. N. da Costa , M. E. S. Pereira , T. M. Davis , J. De Vicente , S. Desai , H. T. Diehl , P. Doel , K. Eckert , J. Elvin-Poole , S. Everett , A. E. Evrard , X. Fang , I. Ferrero , A. Ferté , B. Flaugher , P. Fosalba , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , K. Glazebrook , D. Gomes , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , B. Jain , D. J. James , T. Jeltema , N. Kokron , E. Krause , K. Kuehn , O. Lahav , G. F. Lewis , C. Lidman , M. Lima , H. Lin , M. A. G. Maia , U. Malik , P. Martini , P. Melchior , J. Mena-Fernández , F. Menanteau , R. Miquel , J. J. Mohr , R. Morgan , J. Muir , J. Myles , A. Möller , A. Palmese , F. Paz-Chinchón , W. J. Percival , A. Pieres , A. A. Plazas Malagón , A. Porredon , J. Prat , M. Rodriguez-Monroy , A. K. Romer , A. Roodman , R. Rosenfeld , A. J. Ross , E. Sanchez , D. Sanchez Cid , V. Scarpine , S. Serrano , I. Sevilla-Noarbe , E. Sheldon , M. Smith , M. Soares-Santos , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , C. To , M. A. Troxel , B. E. Tucker , D. L. Tucker , I. Tutusaus , S. A. Uddin , T. N. Varga , J. Weller , R. D. Wilkinson

We present a joint cosmic shear analysis of the Dark Energy Survey (DES Y3) and the Kilo-Degree Survey (KiDS-1000) in a collaborative effort between the two survey teams. We find consistent cosmological parameter constraints between DES Y3…

宇宙学与河外天体物理 · 物理学 2023-10-24 Dark Energy Survey , Kilo-Degree Survey Collaboration , : , T. M. C. Abbott , M. Aguena , A. Alarcon , O. Alves , A. Amon , F. Andrade-Oliveira , M. Asgari , S. Avila , D. Bacon , K. Bechtol , M. R. Becker , G. M. Bernstein , E. Bertin , M. Bilicki , J. Blazek , S. Bocquet , D. Brooks , P. Burger , D. L. Burke , H. Camacho , A. Campos , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , R. Cawthon , C. Chang , R. Chen , A. Choi , C. Conselice , J. Cordero , M. Crocce , L. N. da Costa , M. E. da Silva Pereira , R. Dalal , C. Davis , J. T. A. de Jong , J. DeRose , S. Desai , H. T. Diehl , S. Dodelson , P. Doel , C. Doux , A. Drlica-Wagner , A. Dvornik , K. Eckert , T. F. Eifler , J. Elvin-Poole , S. Everett , X. Fang , I. Ferrero , A. Ferté , B. Flaugher , O. Friedrich , J. Frieman , J. García-Bellido , M. Gatti , G. Giannini , B. Giblin , D. Gruen , R. A. Gruendl , G. Gutierrez , I. Harrison , W. G. Hartley , K. Herner , C. Heymans , H. Hildebrandt , S. R. Hinton , H. Hoekstra , D. L. Hollowood , K. Honscheid , H. Huang , E. M. Huff , D. Huterer , D. J. James , M. Jarvis , N. Jeffrey , T. Jeltema , B. Joachimi , S. Joudaki , A. Kannawadi , E. Krause , K. Kuehn , K. Kuijken , N. Kuropatkin , O. Lahav , P. -F. Leget , P. Lemos , S. -S. Li , X. Li , A. R. Liddle , M. Lima , C. -A Lin , H. Lin , N. MacCrann , C. Mahony , J. L. Marshall , J. McCullough , J. Mena-Fernández , F. Menanteau , R. Miquel , J. J. Mohr , J. Muir , J. Myles , N. Napolitano , A. Navarro-Alsina , R. L. C. Ogando , A. Palmese , S. Pandey , Y. Park , M. Paterno , J. A. Peacock , D. Petravick , A. Pieres , A. A. Plazas Malagón , A. Porredon , J. Prat , M. Radovich , M. Raveri , R. Reischke , N. C. Robertson , R. P. Rollins , A. K. Romer , A. Roodman , E. S. Rykoff , S. Samuroff , C. Sánchez , E. Sanchez , J. Sanchez , P. Schneider , L. F. Secco , I. Sevilla-Noarbe , H. -Y. Shan , E. Sheldon , T. Shin , C. Sifón , M. Smith , M. Soares-Santos , B. Stölzner , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , C. To , M. A. Troxel , T. Tröster , I. Tutusaus , J. L. van den Busch , T. N. Varga , A. R. Walker , N. Weaverdyck , R. H. Wechsler , J. Weller , P. Wiseman , A. H. Wright , B. Yanny , B. Yin , M. Yoon , Y. Zhang , J. Zuntz

We present observational constraints on the nature of dark energy using the Supernova Legacy Survey three year sample (SNLS3) of Guy et al. (2010) and Conley et al. (2011). We use the 472 SNe Ia in this sample, accounting for recently…

The intrinsic alignments (IA) of galaxies, regarded as a contaminant in weak lensing analyses, represents the correlation of galaxy shapes due to gravitational tidal interactions and galaxy formation processes. As such, understanding IA is…

宇宙学与河外天体物理 · 物理学 2024-04-23 Sneh Pandya , Yuanyuan Yang , Nicholas Van Alfen , Jonathan Blazek , Robin Walters

As the statistical power of galaxy weak lensing reaches percent level precision, large, realistic and robust simulations are required to calibrate observational systematics, especially given the increased importance of object blending as…

We use mock galaxy survey simulations designed to resemble the Dark Energy Survey Year 1 (DES Y1) data to validate and inform cosmological parameter estimation. When similar analysis tools are applied to both simulations and real survey…

We present the distance priors that we have derived from the 2015 Planck data, and use these in combination with the latest observational data from Type Ia Supernovae (SNe Ia) and galaxy clustering, to explore the systematic uncertainties…

宇宙学与河外天体物理 · 物理学 2016-10-26 Yun Wang , Mi Dai

We investigate how the cosmological constraints from SNe Ia are improved by including the effects of weak-lensing convergence. To do so, we introduce the lognormal function as the convergence PDF modeling the lensing scatter of SN Ia…

宇宙学与河外天体物理 · 物理学 2019-06-26 Ryuichiro Hada , Toshifumi Futamase

A key science goal of upcoming dark energy surveys is to seek time evolution of the dark energy. This problem is one of {\em model selection}, where the aim is to differentiate between cosmological models with different numbers of…

天体物理学 · 物理学 2009-11-11 Pia Mukherjee , David Parkinson , Pier Stefano Corasaniti , Andrew R. Liddle , Martin Kunz

Dark Scattering (DS) is an interacting dark energy model characterised by pure momentum exchange between dark energy and dark matter. It is phenomenologically interesting because it is unconstrained by CMB data and can alleviate the $S_8$…

宇宙学与河外天体物理 · 物理学 2025-09-03 M. Tsedrik , S. Lee , K. Markovic , P. Carrilho , A. Pourtsidou , C. Moretti , B. Bose , E. Huff , A. Robertson , P. L. Taylor , J. Zuntz

Galaxy shear - cosmic microwave background (CMB) lensing convergence cross-correlations contain additional information on cosmology to auto-correlations. While being immune to certain systematic effects, they are affected by the galaxy…

The analysis of current and future cosmological surveys of type Ia supernovae (SNe Ia) at high-redshift depends on the accurate photometric classification of the SN events detected. Generating realistic simulations of photometric SN surveys…

New Cosmic Microwave Background, Galaxy Clustering and Supernovae type Ia data are increasingly constraining the dark energy component of our Universe. While the cosmological constant scenario remains consistent with these new tight…

天体物理学 · 物理学 2007-05-23 Alessandro Melchiorri

Intrinsic alignments (IA), the coherent alignment of intrinsic galaxy orientations, can be a source of a systematic error of weak lensing surveys. The redshift evolution of IA also contains information about the physics of galaxy formation…

宇宙学与河外天体物理 · 物理学 2018-04-26 Motonari Tonegawa , Teppei Okumura , Tomonori Totani , Gavin Dalton , Karl Glazebrook , Kiyoto Yabe

The current generation of large galaxy surveys will test the cosmological model by combining multiple types of observational probes. Realising the statistical promise of these new datasets requires rigorous attention to all aspects of…