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 …

Core formation in dwarf haloes with self-interacting dark matter: no fine-tuning necessary

OD Elbert, JS Bullock… - Monthly Notices of …, 2015 - academic.oup.com
We investigate the effect of self-interacting dark matter (SIDM) on the density profiles of V
max≃ 40km s− 1 isolated dwarf dark matter haloes–the scale of relevance for the too big to …

Baryons matter: why luminous satellite galaxies have reduced central masses

A Zolotov, AM Brooks, B Willman… - The Astrophysical …, 2012 - iopscience.iop.org
Using high-resolution cosmological hydrodynamical simulations of Milky Way-massed disk
galaxies, we demonstrate that supernovae feedback and tidal stripping lower the central …

Too big to fail in the local group

S Garrison-Kimmel, M Boylan-Kolchin… - Monthly Notices of …, 2014 - academic.oup.com
We compare the dynamical masses of dwarf galaxies in the Local Group (LG) to those of
haloes in the ELVIS (Exploring the Local Volume in Simulations) suite of Λ cold dark matter …

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 …

Non-baryonic dark matter in cosmology

A Del Popolo - AIP Conference Proceedings, 2013 - pubs.aip.org
This paper is based on lectures given at the IX Mexican School on Gravitation and
Mathematical Physics. The lectures (as the paper) were a broad-band review of the current …

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 …

NIHAO–XIV. Reproducing the observed diversity of dwarf galaxy rotation curve shapes in ΛCDM

IM Santos-Santos, A Di Cintio, CB Brook… - Monthly Notices of …, 2018 - academic.oup.com
The significant diversity of rotation curve (RC) shapes in dwarf galaxies has recently
emerged as a challenge to Λ cold dark matter (ΛCDM): in dark matter (DM) only simulations …

Rotation curves of high-resolution LSB and SPARC galaxies with fuzzy and multistate (ultralight boson) scalar field dark matter

T Bernal, LM Fernández-Hernández… - Monthly Notices of …, 2018 - academic.oup.com
Cold dark matter (CDM) has shown to be an excellent candidate for the dark matter (DM) of
the Universe at large scales; however, it presents some challenges at the galactic level. The …

Searching for secluded dark matter with HESS, Fermi-LAT, and Planck

S Profumo, FS Queiroz, J Silk… - Journal of Cosmology …, 2018 - iopscience.iop.org
Short-lived mediators are often used to describe dark matter interactions with Standard
Model particles. When the dark matter mass is heavier than the mass of the mediator, it may …