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Modified Newtonian dynamics as an alternative to dark matter
Robert Sanders,Stacy S. McGaugh +1 more
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Modified Newtonian dynamics (MOND) is an empirically motivated modification of Newtonian gravity or inertia suggested by Milgrom as an alternative to cosmic dark matter as mentioned in this paper.Abstract:
▪ Abstract Modified Newtonian dynamics (MOND) is an empirically motivated modification of Newtonian gravity or inertia suggested by Milgrom as an alternative to cosmic dark matter. The basic idea is that at accelerations below ao ≈ 10−8 cm/s2 ≈ cHo/6 the effective gravitational attraction approaches , where gn is the usual Newtonian acceleration. This simple algorithm yields flat rotation curves for spiral galaxies and a mass-rotation velocity relation of the form M ∝ V4 that forms the basis for the observed luminosity–rotation velocity relation—the Tully-Fisher law. We review the phenomenological success of MOND on scales ranging from dwarf spheroidal galaxies to superclusters and demonstrate that the evidence for dark matter can be equally well interpreted as evidence for MOND. We discuss the possible physical basis for an acceleration-based modification of Newtonian dynamics as well as the extention of MOND to cosmology and structure formation.read more
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Modified Gravity and Cosmology
TL;DR: A comprehensive survey of recent work on modified theories of gravity and their cosmological consequences can be found in this article, where the authors provide a reference tool for researchers and students in cosmology and gravitational physics, as well as a selfcontained, comprehensive and up-to-date introduction to the subject as a whole.
Journal ArticleDOI
Observational Evidence of Active Galactic Nuclei Feedback
TL;DR: In this article, it was shown that the radiative or quasar mode of feedback can account for the observed proportionality between the central black hole and the host galaxy mass, which can lead to ejection or heating of the gas.
Journal ArticleDOI
Relativistic gravitation theory for the modified Newtonian dynamics paradigm
TL;DR: The relativistic modified Newtonian dynamics (MOND) paradigm of Milgrom can boast of a number of successful predictions regarding galactic dynamics; these are made without the assumption that dark matter plays a significant role as mentioned in this paper.
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
Beyond the cosmological standard model
TL;DR: A review of the state of the art in the field of modified gravity can be found in this article, where the authors identify the guiding principles for rigorous and consistent modifications of the standard model, and discuss the prospects for empirical tests.
References
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Measurements of Omega and Lambda from 42 High-Redshift Supernovae
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TL;DR: In this paper, the mass density, Omega_M, and cosmological-constant energy density of the universe were measured using the analysis of 42 Type Ia supernovae discovered by the Supernova Cosmology project.
Journal ArticleDOI
Measurements of Omega and Lambda from 42 High-Redshift Supernovae
Saul Perlmutter,Greg Aldering,G. Goldhaber,R. A. Knop,Peter Nugent,P. G. Castro,Susana E. Deustua,Sebastien Fabbro,A. Goobar,D. E. Groom,I. M. Hook,A. G. Kim,M. Y. Kim,Julia C. Lee,Nelson J. Nunes,Reynald Pain,C. R. Pennypacker,R. M. Quimby,C. Lidman,Richard S. Ellis,Michael G. Irwin,Richard G. McMahon,P. Ruiz-Lapuente,Nicholas A. Walton,Bradley E. Schaefer,B. J. Boyle,Alexei V. Filippenko,Thomas Matheson,A. S. Fruchter,Nino Panagia,Heidi Jo Newberg,W. J. Couch +31 more
TL;DR: In this paper, the mass density, Omega_M, and cosmological-constant energy density of the universe were measured by the analysis of 42 Type Ia supernovae discovered by the Supernova Cosmology Project.
Journal ArticleDOI
The Structure of cold dark matter halos
TL;DR: In this article, high-resolution N-body simulations show that the density profiles of dark matter halos formed in the standard CDM cosmogony can be fit accurately by scaling a simple universal profile.
Journal ArticleDOI
Mach's principle and a relativistic theory of gravitation
Carl H. Brans,R. H. Dicke +1 more
TL;DR: In this paper, the role of Mach's principle in physics is discussed in relation to the equivalence principle and the difficulties encountered in attempting to incorporate Mach's principles into general relativity are discussed.
Journal ArticleDOI
Notes on black-hole evaporation
TL;DR: In this paper, the authors examined various aspects of black-hole evaporation and proposed a technique for replacing the collapse by boundary conditions on the past horizon, which retains the essential features of the collapse while eliminating some of the difficulties.