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 …

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 …

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 …

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 …

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 …

The structure of cold dark matter halos

JF Navarro - Symposium-international astronomical union, 1996 - cambridge.org
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” …

The cosmological constant and dark energy

PJE Peebles, B Ratra - Reviews of modern physics, 2003 - APS
Physics welcomes the idea that space contains energy whose gravitational effect
approximates that of Einstein's cosmological constant, Λ; today the concept is termed dark …

Supersymmetric dark matter

G Jungman, M Kamionkowski, K Griest - Physics Reports, 1996 - Elsevier
There is almost universal agreement among astronomers that most of the mass in the
Universe and most of the mass in the Galactic halo is dark. Many lines of reasoning suggest …

[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 …