Journal ArticleDOI
The peculiar velocity field in the local supercluster
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In this paper, a general method of estimating the peculiar velocity field expected, under the gravitational instability picture, around the outer parts of a mass concentration like a cluster of galaxies is derived and applied to a preliminary analysis of the Sandage-Tammmann data on the distances and redshifts of nearby spiral galaxies.Abstract:
A general method of estimating the peculiar velocity field expected, under the gravitational instability picture, around the outer parts of a mass concentration like a cluster of galaxies is derived and applied to a preliminary analysis of the Sandage-Tammmann data on the distances and redshifts of nearby spiral galaxies. It is shown that there is evidence of a small peculiar velocity field of the sort expected. The field, if real, is consistent with a cosmologically flat universe, ..cap omega..=1; equally well, with a low-density cosmological model, ..cap omega..approx. =0.1. It is concluded that the data on the local peculiar velocity field do not yet offer a strong constraint on the density parameter ..cap omega... (AIP)read more
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Large scale structure of the universe and cosmological perturbation theory
Francis Bernardeau,Stephane Colombi,Enrique Gaztanaga,Enrique Gaztanaga,Roman Scoccimarro,Roman Scoccimarro +5 more
TL;DR: In this article, the authors review the formalism and applications of non-linear perturbation theory (PT) to understand the large-scale structure of the universe, from the linear to the nonlinear regime.
Journal ArticleDOI
Cosmology and Fundamental Physics with the Euclid Satellite
Luca Amendola,Stephen Appleby,Anastasios Avgoustidis,David Bacon,Tessa Baker,Marco Baldi,Marco Baldi,Marco Baldi,Nicola Bartolo,Nicola Bartolo,Alain Blanchard,Camille Bonvin,Stefano Borgani,Stefano Borgani,Enzo Branchini,Enzo Branchini,Clare Burrage,Stefano Camera,Carmelita Carbone,Carmelita Carbone,Luciano Casarini,Luciano Casarini,Mark Cropper,Claudia de Rham,J. P. Dietrich,Cinzia Di Porto,Ruth Durrer,Anne Ealet,Pedro G. Ferreira,Fabio Finelli,Juan Garcia-Bellido,Tommaso Giannantonio,Luigi Guzzo,Luigi Guzzo,Alan Heavens,Lavinia Heisenberg,Catherine Heymans,Henk Hoekstra,Lukas Hollenstein,Rory Holmes,Zhiqi Hwang,Knud Jahnke,Thomas D. Kitching,Tomi S. Koivisto,Martin Kunz,Giuseppe Vacca,Eric V. Linder,M. March,Valerio Marra,Carlos Martins,Elisabetta Majerotto,Dida Markovic,David J. E. Marsh,Federico Marulli,Federico Marulli,Richard Massey,Yannick Mellier,Francesco Montanari,David F. Mota,Nelson J. Nunes,Will J. Percival,Valeria Pettorino,Valeria Pettorino,Cristiano Porciani,Claudia Quercellini,Justin I. Read,Massimiliano Rinaldi,Domenico Sapone,Ignacy Sawicki,Roberto Scaramella,Constantinos Skordis,Constantinos Skordis,Fergus Simpson,Andy Taylor,Shaun A. Thomas,Roberto Trotta,Licia Verde,Filippo Vernizzi,Adrian Vollmer,Yun Wang,Jochen Weller,T. G. Zlosnik +81 more
TL;DR: Euclid is a European Space Agency medium-class mission selected for launch in 2020 within the cosmic vision 2015-2025 program as discussed by the authors, which will explore the expansion history of the universe and the evolution of cosmic structures by measuring shapes and red-shift of galaxies as well as the distribution of clusters of galaxies over a large fraction of the sky.
Journal ArticleDOI
Cosmology and fundamental physics with the Euclid satellite
Luca Amendola,Stephen Appleby,David Bacon,Tessa Baker,Marco Baldi,Nicola Bartolo,Alain Blanchard,Camille Bonvin,Stefano Borgani,Enzo Branchini,Clare Burrage,Stefano Camera,Carmelita Carbone,Luciano Casarini,Mark Cropper,Claudia deRham,Cinzia Di Porto,Anne Ealet,Pedro G. Ferreira,Fabio Finelli,Juan Garcia-Bellido,Tommaso Giannantonio,Luigi Guzzo,Alan Heavens,Lavinia Heisenberg,Catherine Heymans,Henk Hoekstra,Lukas Hollenstein,Rory Holmes,Ole Horst,Knud Jahnke,Thomas D. Kitching,Tomi S. Koivisto,Martin Kunz,Giuseppe Vacca,M. March,Elisabetta Majerotto,Katarina Markovic,David J. E. Marsh,Federico Marulli,Richard Massey,Yannick Mellier,David F. Mota,Nelson J. Nunes,Will J. Percival,Valeria Pettorino,Cristiano Porciani,Claudia Quercellini,Justin I. Read,Massimiliano Rinaldi,Domenico Sapone,Roberto Scaramella,Constantinos Skordis,Fergus Simpson,Andy Taylor,Shaun A. Thomas,Roberto Trotta,Licia Verde,Filippo Vernizzi,Adrian Vollmer,Yun Wang,Jochen Weller,T. G. Zlosnik +62 more
TL;DR: This review is meant to provide a guide to the scientific themes that will underlie the activity of the group during the preparation of the Euclid mission and discusses five broad topics: dark energy and modified gravity, dark matter, initial conditions, basic assumptions and questions of methodology in the data analysis.
Journal ArticleDOI
Mapping the universe
TL;DR: Maps of the galaxy distribution in the nearby universe reveal large coherent structures, including the "Great Wall", one of several serious challenges to current understanding of the origin and evolution of the large-scale distribution of matter in the universe.
Journal ArticleDOI
The 2MASS Redshift Survey: description and data release
John P. Huchra,Lucas M. Macri,Karen L. Masters,Karen L. Masters,Thomas H. Jarrett,Perry Berlind,Michael L. Calkins,Aidan C. Crook,Roc M. Cutri,Pirin Erdogdu,Emilio E. Falco,T. George,Conrad M. Hutcheson,Ofer Lahav,Jeff A. Mader,Jessica Mink,Nathalie Martimbeau,Stephen E. Schneider,Michael F. Skrutskie,Susan Tokarz,Michael Westover +20 more
TL;DR: The 2MASS XSC as mentioned in this paper contains nearly a million galaxies with K_s ≤ 13.5 mag and is essentially complete and mostly unaffected by interstellar extinction and stellar confusion down to a galactic latitude of |b| = 5° for bright galaxies.