Document detail
ID
oai:arXiv.org:2410.22094
Topic
Astrophysics - Cosmology and Nonga... High Energy Physics - Phenomenolog...Author
Pérez-Poyatos, José María Sanz, VeronicaCategory
sciences: astrophysics
Year
2024
listing date
11/13/2024
Keywords
dr darkAbstract
We investigate the production of dark radiation (DR) from axions and axion-like particles (ALPs) as potential origins of dark matter.
Focusing on the dark matter misalignment mechanism, we examine non-thermal, pre-inflationary scenarios that could lead to the generation of DR.
A key part of our analysis involves a Bayesian approach to confront ALP parameter space with current cosmological data.
Additionally, we explore whether DR production could offer solutions to persistent cosmological anomalies, particularly those related to the Hubble constant $H_0$ tension and the $S_8$ parameter discrepancy.
Our findings aim to shed new light on the role of ALPs in addressing these open issues in cosmology.
;Comment: 37 pages, 6 figures, 3 tables.
v2: updated references and figures
Pérez-Poyatos, José María,Sanz, Veronica, 2024, Dark Radiation production in axion misalignment mechanisms and the cosmological tensions
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