Challenges for ΛCDM: An update

L Perivolaropoulos, F Skara - New Astronomy Reviews, 2022 - Elsevier
A number of challenges to the standard Λ CDM model have been emerging during the past
few years as the accuracy of cosmological observations improves. In this review we discuss …

Baryonic solutions and challenges for cosmological models of dwarf galaxies

LV Sales, A Wetzel, A Fattahi - Nature Astronomy, 2022 - nature.com
Galaxies and their dark-matter haloes have posed several challenges to the dark energy
plus cold dark matter (Λ CDM) cosmological model. These discrepancies between …

The second data release from the European Pulsar Timing Array-IV. Implications for massive black holes, dark matter, and the early Universe

J Antoniadis, P Arumugam, S Arumugam… - Astronomy & …, 2024 - aanda.org
The European Pulsar Timing Array (EPTA) and Indian Pulsar Timing Array (InPTA)
collaborations have measured a low-frequency common signal in the combination of their …

Second data release from the European pulsar timing array: challenging the ultralight dark matter paradigm

C Smarra, B Goncharov, E Barausse, J Antoniadis… - Physical Review Letters, 2023 - APS
Pulsar Timing Array experiments probe the presence of possible scalar or pseudoscalar
ultralight dark matter particles through decade-long timing of an ensemble of galactic …

[HTML][HTML] Observational evidence for primordial black holes: A positivist perspective

BJ Carr, S Clesse, J Garcia-Bellido, MRS Hawkins… - Physics Reports, 2024 - Elsevier
We review numerous arguments for primordial black holes (PBHs) based on observational
evidence from a variety of lensing, dynamical, accretion and gravitational-wave effects. This …

The second data release from the European Pulsar Timing Array: V. Implications for massive black holes, dark matter and the early Universe

J Antoniadis, P Arumugam, S Arumugam… - arXiv preprint arXiv …, 2023 - arxiv.org
The European Pulsar Timing Array (EPTA) and Indian Pulsar Timing Array (InPTA)
collaborations have measured a low-frequency common signal in the combination of their …

Ultra-light dark matter

EGM Ferreira - The Astronomy and Astrophysics Review, 2021 - Springer
Ultra-light dark matter is a class of dark matter models (DM), where DM is composed by
bosons with masses ranging from 10^-24\, eV< m< eV 10-24 eV< m< eV. These models …

Small-Scale Challenges to the Λ CDM Paradigm

JS Bullock, M Boylan-Kolchin - Annual Review of Astronomy …, 2017 - annualreviews.org
The dark energy plus cold dark matter (ΛCDM) cosmological model has been a
demonstrably successful framework for predicting and explaining the large-scale structure of …

Dark matter self-interactions and small scale structure

S Tulin, HB Yu - Physics Reports, 2018 - Elsevier
We review theories of dark matter (DM) beyond the collisionless paradigm, known as self-
interacting dark matter (SIDM), and their observable implications for astrophysical structure …

The dawn of FIMP dark matter: a review of models and constraints

N Bernal, M Heikinheimo, T Tenkanen… - … Journal of Modern …, 2017 - World Scientific
We present an overview of scenarios where the observed Dark Matter (DM) abundance
consists of Feebly Interacting Massive Particles (FIMPs), produced nonthermally by the so …