Small scale problems of the ΛCDM model: a short review

A Del Popolo, M Le Delliou - Galaxies, 2017 - mdpi.com
The ΛCDM model, or concordance cosmology, as it is often called, is a paradigm at its
maturity. It is clearly able to describe the universe at large scale, even if some issues remain …

Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics

L Sebastiani, S Vagnozzi… - Advances in High Energy …, 2017 - Wiley Online Library
Mimetic gravity is a Weyl‐symmetric extension of General Relativity, related to the latter by a
singular disformal transformation, wherein the appearance of a dust‐like perfect fluid can …

Dark matter heats up in dwarf galaxies

JI Read, MG Walker, P Steger - Monthly Notices of the Royal …, 2019 - academic.oup.com
Gravitational potential fluctuations driven by bursty star formation can kinematically 'heat
up'dark matter at the centres of dwarf galaxies. A key prediction of such models is that, at a …

Diversity of dark matter density profiles in the galactic dwarf spheroidal satellites

K Hayashi, M Chiba, T Ishiyama - The Astrophysical Journal, 2020 - iopscience.iop.org
The core–cusp problem is one of the controversial issues in the standard paradigm of Λ cold
dark matter (ΛCDM) theory. However, under the assumption of conventional spherical …

Density profile of dark matter haloes and galaxies in the horizonagn simulation: the impact of AGN feedback

S Peirani, Y Dubois, M Volonteri… - Monthly Notices of …, 2017 - academic.oup.com
Using a suite of three large cosmological hydrodynamical simulations, horizon–agn, horizon–
noagn (no AGN feedback) and horizon–dm (no baryons), we investigate how a typical sub …

Status, challenges and directions in indirect dark matter searches

C Pérez de los Heros - Symmetry, 2020 - mdpi.com
Indirect searches for dark matter are based on detecting an anomalous flux of photons,
neutrinos or cosmic-rays produced in annihilations or decays of dark matter candidates …

Galaxy morphology rules out astrophysically relevant Hu-Sawicki gravity

H Desmond, PG Ferreira - Physical Review D, 2020 - APS
f (R) is a paradigmatic modified gravity theory that typifies extensions to General Relativity
with new light degrees of freedom and hence screened fifth forces between masses. These …

Review of solutions to the cusp-core problem of the ΛCDM model

A Del Popolo, M Le Delliou - Galaxies, 2021 - mdpi.com
This review aims at proposing to the field an overview of the Cusp-core problem, including a
discussion of its advocated solutions, assessing how each can satisfactorily provide a …

EDGE: two routes to dark matter core formation in ultra-faint dwarfs

MDA Orkney, JI Read, MP Rey, I Nasim… - Monthly Notices of …, 2021 - academic.oup.com
In the standard Lambda cold dark matter paradigm, pure dark matter simulations predict
dwarf galaxies should inhabit dark matter haloes with a centrally diverging density 'cusp' …

Bounding the mass of ultralight bosonic dark matter particles with the motion of the S2 star around Sgr

R Della Monica, I de Martino - Physical Review D, 2023 - APS
Dark matter is undoubtedly one of the fundamental, albeit unknown, components of the
standard cosmological model. The failure to detect weakly interacting massive particles, the …