4.7 Article

Distinguishing Dark Matter, Modified Gravity, and Modified Inertia with the Inner and Outer Parts of Galactic Rotation Curves

Related references

Note: Only part of the references are listed.
Article Astronomy & Astrophysics

Stellar Mass-to-light Ratios: Composite Bulge plus Disk Models and the Baryonic Tully-Fisher Relation

James Schombert et al.

Summary: This study presents stellar population models to calculate the mass-to-light ratio based on the colors of galaxies. A new composite bulge+disk model is introduced, considering the varying contributions from bulges and disks based on their optical and near-IR colors. Plausible star formation histories and chemical enrichment scenarios are built using these colors, improving the accuracy of the results. The study finds that using actual colors to constrain the mass-to-light ratio provides the most accurate prescription, but a reasonable bulge+disk model with total color also yields relatively accurate results.

ASTRONOMICAL JOURNAL (2022)

Article Astronomy & Astrophysics

The Effect of Adiabatic Compression on Dark Matter Halos and the Radial Acceleration Relation

Pengfei Li et al.

Summary: This paper investigates the radial acceleration relation (RAR) in a cold dark matter (CDM) framework using a semiempirical model. The study finds that the CDM model with abundance matching alone cannot explain the observed RAR, and the overall compression of dark matter halos leads to systematic deviations from the observed relation.

ASTROPHYSICAL JOURNAL (2022)

Article Astronomy & Astrophysics

Numerical Solutions of the External Field Effect on the Radial Acceleration in Disk Galaxies

Kyu-Hyun Chae et al.

Summary: In theories based on modified Newtonian dynamics (MOND), the strong equivalence principle is broken in a unique way, resulting in the action of an external field effect (EFE). Research shows that even a constant external field can affect the internal dynamics of a self-gravitating system, leading to changes in rotational speeds in disk galaxies. Numerical studies provide insights into how external fields modify the quasi-flat part of rotation curves.

ASTROPHYSICAL JOURNAL (2022)

Article Astronomy & Astrophysics

Overestimated inclinations of Milgromian disc galaxies: the case of the ultradiffuse galaxy AGC 114905

Indranil Banik et al.

Summary: In this study, two hydrodynamical simulations of star-forming galaxies are presented in the framework of Milgromian dynamics (MOND), which show that the observed rotation curve of AGC 114905 is consistent with the MOND prediction. The simulations demonstrate that the isophotes in the face-on view can differ significantly from circular by 50%, which can lead to the overestimation of the inclination between the galactic disk and the sky plane by observers. The actual rotation curve could be much higher than reported by observers, thus reconciling AGC 114905 with MOND expectations.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Review Astronomy & Astrophysics

Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies

Elcio Abdalla et al.

Summary: The paper discusses the limitations of the standard Lambda Cold Dark Matter (Lambda CDM) cosmological model and proposes new physics models to alleviate the tensions in various cosmological measurements. The authors emphasize the importance of considering a wide range of data and discuss the significance of upcoming experiments and space missions in addressing open questions in cosmology.

JOURNAL OF HIGH ENERGY ASTROPHYSICS (2022)

Article Astronomy & Astrophysics

Challenges for ACDM: An update

L. Perivolaropoulos et al.

Summary: In recent years, challenges to the standard ACDM model have been emerging as cosmological observations improve. This review discusses various signals in cosmological and astrophysical data that are in tension with the standard ACDM model, such as the Hubble tension, growth tension, and lensing amplitude anomaly, as well as other less-discussed signals that may hint towards new physics. The goal is to provide an update on the current status of these signals, particularly the Hubble tension, and refer readers to additional resources for more details.

NEW ASTRONOMY REVIEWS (2022)

Article Astronomy & Astrophysics

The distribution and morphologies of Fornax Cluster dwarf galaxies suggest they lack dark matter

Elena Asencio et al.

Summary: Due to their low surface brightness, dwarf galaxies are vulnerable to tidal forces. This study compares the properties of dwarf galaxies in the Fornax Cluster with the Lambda Cold Dark Matter (Lambda CDM) cosmological model and Milgromian dynamics (MOND). The results show that MOND is more consistent with the observed deformations and the lack of low surface brightness dwarfs in the Fornax Cluster than the Lambda CDM model.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Review Multidisciplinary Sciences

From Galactic Bars to the Hubble Tension: Weighing Up the Astrophysical Evidence for Milgromian Gravity

Indranil Banik et al.

Summary: Astronomical observations reveal a major deficiency in our understanding of physics, which may be explained by Milgromian dynamics (MOND) theory. We review the MOND theory and test its predictions using evidence from galaxies and the universe. We find that MOND is well-supported by data across different scales. The article also discusses future testing directions.

SYMMETRY-BASEL (2022)

Article Astronomy & Astrophysics

The phenomenology of the external field effect in cold dark matter models

Aseem Paranjape et al.

Summary: This study questions the claimed statistical detection of an 'external field effect' using rotation curve data, highlighting uncertainties in analysis and inaccuracies in external field estimates. It demonstrates that a similar signal is expected in a ΛCDM universe without violating the strong equivalence principle, and suggests that the sign of the correlation between external field strength and radial acceleration can be used to probe new physics.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Article Physics, Multidisciplinary

Anomalies in physical cosmology

P. J. E. Peebles

Summary: The passage highlights the importance of the Lambda CDM cosmology as a good approximation to reality, while acknowledging its incompleteness and the need for further research on anomalies that could lead to a better cosmological theory.

ANNALS OF PHYSICS (2022)

Article Astronomy & Astrophysics

Models of a modified-inertia formulation of MOND

Mordehai Milgrom

Summary: The modified-inertia formulation of MOND is described and applied to nonrelativistic many-body systems. The models accurately predict the behaviors of the systems according to the basic principles of MOND. These models play a crucial role in highlighting the differences between existing modified-gravity formulations and their second-tier predictions.

PHYSICAL REVIEW D (2022)

Article Astronomy & Astrophysics

Testing the Strong Equivalence Principle. II. Relating the External Field Effect in Galaxy Rotation Curves to the Large-scale Structure of the Universe

Kyu-Hyun Chae et al.

Summary: The study reveals that the internal dynamics of self-gravitating systems in freefall are affected by the strength of the external gravitational field, with a significant impact on the rotation curves of galaxies. It was found that galaxies in underdense or overdense regions exhibit contrasting relationships with the external gravitational field.

ASTROPHYSICAL JOURNAL (2021)

Article Astronomy & Astrophysics

The Phantom Dark Matter Halos of the Local Volume in the Context of Modified Newtonian Dynamics

P-A Oria et al.

Summary: The study explores the predictions of Milgromian gravity (MOND) in the local universe by considering the distribution of phantom dark matter (PDM) to enable comparison with the dark matter framework. The analysis focuses on the stellar-to-(phantom)halo mass relation (SHMR) in the quasi-linear version of MOND (QUMOND), showing a monotonically increasing power law shape. A map of the Local Volume is generated in QUMOND, emphasizing the influence of distant galaxy clusters, particularly Virgo. Additionally, a model of the Milky Way in the MOND context is provided, along with testing a new analytic formula for computing galaxy rotation curves in the presence of an external field in QUMOND.

ASTROPHYSICAL JOURNAL (2021)

Review Astronomy & Astrophysics

In the realm of the Hubble tension-a review of solutions *

Eleonora Di Valentino et al.

Summary: There are significant discrepancies in predictions of the Hubble constant, leading to various proposed solutions including new physics theories or modifications to existing cosmological models. Some solutions successfully reduce tension and improve agreement with data, while many others fail to do so, highlighting the need for further research and evidence.

CLASSICAL AND QUANTUM GRAVITY (2021)

Article Astronomy & Astrophysics

The radial acceleration relation in a ΛCDM universe

Aseem Paranjape et al.

Summary: Our study explores the radial acceleration relation (RAR) between total and baryonic centripetal acceleration profiles of central galaxies in the cold dark matter (CDM) paradigm. We find that the RAR is intricately connected with the quasi-adiabatic relaxation of dark matter in the presence of baryons in deep potential wells. The results show how mean RAR and its scatter emerge in the low-acceleration regime due to the interplay between baryonic feedback processes and the distribution of CDM in dark haloes, providing more robust predictions for the Lambda CDM paradigm.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

The Kennicutt-Schmidt law and the main sequence of galaxies in Newtonian and milgromian dynamics

Akram Hasani Zonoozi et al.

Summary: The Kennicutt-Schmidt law describes the relationship between star formation rate and gas density in disc galaxies, and using Milgromian dynamics reveals further insights about galaxy evolution. Enhanced disc self-gravity in MOND allows star formation to extend to larger galactocentric radii and the analytical derivation of the relationship between star formation rate and gas density can offer valuable information about cloud sizes and masses. Additionally, temperature affects star formation rate by a factor of root 2 at most, and empirically found corrections to the Kennicutt-Schmidt law are accounted for in the presented relations.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

A first attempt to differentiate between modified gravity and modified inertia with galaxy rotation curves

Jonas Petersen et al.

ASTRONOMY & ASTROPHYSICS (2020)

Article Astronomy & Astrophysics

A dark matter profile to model diverse feedback-induced core sizes of ΛCDM haloes

Alexandres Lazar et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Article Astronomy & Astrophysics

NIHAO-XXIII. Dark matter density shaped by black hole feedback

Andrea V. Maccio et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Article Astronomy & Astrophysics

A Comprehensive Catalog of Dark Matter Halo Models for SPARC Galaxies

Pengfei Li et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2020)

Article Astronomy & Astrophysics

The prediction of rotation curves in gas-dominated dwarf galaxies with modified dynamics

R. H. Sanders

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Astronomy & Astrophysics

The radial acceleration relation in disc galaxies in the MassiveBlack-II simulation

Ananth Tenneti et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Article Astronomy & Astrophysics

Fitting the radial acceleration relation to individual SPARC galaxies

Pengfei Li et al.

ASTRONOMY & ASTROPHYSICS (2018)

Article Astronomy & Astrophysics

Stellar Mass-Halo Mass Relation and Star Formation Efficiency in High-Mass Halos

A. V. Kravtsov et al.

ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS (2018)

Article Astronomy & Astrophysics

Fitting the radial acceleration relation to individual SPARC galaxies

Pengfei Li et al.

ASTRONOMY & ASTROPHYSICS (2018)

Article Astronomy & Astrophysics

A statistical investigation of the mass discrepancy-acceleration relation

Harry Desmond

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2017)

Article Astronomy & Astrophysics

The origin of the mass discrepancy-acceleration relation in Λ CDM

Julio F. Navarro et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2017)

Article Physics, Multidisciplinary

Mass-Discrepancy Acceleration Relation: A Natural Outcome of Galaxy Formation in Cold Dark Matter Halos

Aaron D. Ludlow et al.

PHYSICAL REVIEW LETTERS (2017)

Article Astronomy & Astrophysics

ΛCDM is Consistent with SPARC Radial Acceleration Relation

B. W. Keller et al.

ASTROPHYSICAL JOURNAL LETTERS (2017)

Article Astronomy & Astrophysics

NIHAO - IV: core creation and destruction in dark matter density profiles across cosmic time

Edouard Tollet et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2016)

Article Physics, Multidisciplinary

Radial Acceleration Relation in Rotationally Supported Galaxies

Stacy S. McGaugh et al.

PHYSICAL REVIEW LETTERS (2016)

Article Astronomy & Astrophysics

Beyond ΛCDM: Problems, solutions, and the road ahead

Philip Bull et al.

PHYSICS OF THE DARK UNIVERSE (2016)

Article Astronomy & Astrophysics

The mass discrepancy acceleration relation in a ΛCDM context

Arianna Di Cintio et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2016)

Article Astronomy & Astrophysics

SPARC: MASS MODELS FOR 175 DISK GALAXIES WITH SPITZER PHOTOMETRY AND ACCURATE ROTATION CURVES

Federico Lelli et al.

ASTRONOMICAL JOURNAL (2016)

Article Astronomy & Astrophysics

Simple and accurate modelling of the gravitational potential produced by thick and thin exponential discs

R. Smith et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

The dependence of dark matter profiles on the stellar-to-halo mass ratio: a prediction for cusps versus cores

Arianna Di Cintio et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2014)

Article Astronomy & Astrophysics

A mass-dependent density profile for dark matter haloes including the influence of galaxy formation

Arianna Di Cintio et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2014)

Article Astronomy & Astrophysics

Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles

Aaron A. Dutton et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2014)

Article Astronomy & Astrophysics

THE AVERAGE STAR FORMATION HISTORIES OF GALAXIES IN DARK MATTER HALOS FROM z=0-8

Peter S. Behroozi et al.

ASTROPHYSICAL JOURNAL (2013)

Article Astronomy & Astrophysics

Making Galaxies In a Cosmological Context: the need for early stellar feedback

G. S. Stinson et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2013)

Article Astronomy & Astrophysics

emcee: The MCMC Hammer

Daniel Foreman-Mackey et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC (2013)

Article Astronomy & Astrophysics

How supernova feedback turns dark matter cusps into cores

Andrew Pontzen et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2012)

Article Astronomy & Astrophysics

A QUMOND galactic N-body code - I. Poisson solver and rotation curve fitting

G. W. Angus et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2012)

Article Astronomy & Astrophysics

MaGICC discs: matching observed galaxy relationships over a wide stellar mass range

C. B. Brook et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2012)

Review Physics, Particles & Fields

Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions

Benoit Famaey et al.

LIVING REVIEWS IN RELATIVITY (2012)

Article Physics, Multidisciplinary

Global Deep-MOND Parameter as a Theory Discriminant

Mordehai Milgrom

PHYSICAL REVIEW LETTERS (2012)

Review Astronomy & Astrophysics

The Dark Matter Crisis: Falsification of the Current Standard Model of Cosmology

P. Kroupa

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA (2012)

Article Astronomy & Astrophysics

Quasi-linear formulation of MOND

Mordehai Milgrom

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2010)

Article Astronomy & Astrophysics

Concentration, spin and shape of dark matter haloes as a function of the cosmological model: WMAP1, WMAP3 and WMAP5 results

Andrea V. Maccio et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2008)

Article Astronomy & Astrophysics

Modified newtonian dynamics in the Milky Way

B Famaey et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2005)

Article Astronomy & Astrophysics

Maximum feedback and dark matter profiles of dwarf galaxies

OY Gnedin et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2002)

Article Physics, Multidisciplinary

Observational evidence for self-interacting cold dark matter

DN Spergel et al.

PHYSICAL REVIEW LETTERS (2000)