Recurrent Axinovae and their Cosmological Constraints

Abstract

Axion-like dark matter whose symmetry breaking occurs after the end of inflation predicts enhanced primordial density fluctuations at small scales. This leads to dense axion minihalos (or miniclusters) forming early in the history of the Universe. Condensation of axions in the minihalos leads to the formation and subsequent growth of axion stars at the cores of these halos. If, like the QCD axion, the axion-like particle has attractive self-interactions there is a maximal mass for these stars, above which the star rapidly shrinks and converts an $\mathcal{O}(1)$ fraction of its mass into unbound relativistic axions. This process would leave a similar (although in principle distinct) signature in cosmological observables as a decaying dark matter fraction, and thus is strongly constrained. We place new limits on the properties of axion-like particles that are independent of their non-gravitational couplings to the standard model.

arXiv comment13 pages, 2 figures

References in corpus (55)

• The Structure of Cold Dark Matter Halos
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• Small Scale Cosmological Perturbations: An Analytic Approach
• Mass-radius relation of Newtonian self-gravitating Bose-Einstein condensates with short-range interactions: I. Analytical results
• Axion Miniclusters and Bose Stars
• The Growth and Structure of Dark Matter Haloes
• A Clockwork Axion
• Mass-radius relation of Newtonian self-gravitating Bose-Einstein condensates with short-range interactions: II. Numerical results
• Gravitational Bose-Einstein condensation in the kinetic regime
• Axions from Strings: the Attractive Solution
• More Axions from Strings
• Early-Universe Simulations of the Cosmological Axion
• Black hole superradiance of self-interacting scalar fields
• Axion Kinetic Misalignment Mechanism
• Dilute and dense axion stars
• The Large-Misalignment Mechanism for the Formation of Compact Axion Structures: Signatures from the QCD Axion to Fuzzy Dark Matter
• A fresh look at linear cosmological constraints on a decaying dark matter component
• The dark-matter axion mass
• Relativistic axions from collapsing Bose stars
• Studies of the motion and decay of axion walls bounded by strings
• Formation and mass growth of axion stars in axion miniclusters
• Improved estimation of radiated axions from cosmological axionic strings
• Converting non-relativistic dark matter to radiation
• Axion dark matter: strings and their cores
• Collapse of a self-gravitating Bose-Einstein condensate with attractive self-interaction
• Femtolensing and Picolensing by Axion Miniclusters
• Collapse of Axion Stars
• Axion Radiation from Strings
• The scaling density of axion strings
• Long-term dynamics of cosmological axion strings
• The impact of ultra-light axion self-interactions on the large scale structure of the Universe
• The Lifetime of Axion Stars
• Simulations of Axion Minihalos
• Radio-emission of axion stars
• Axion Cosmology with Early Matter Domination
• Approach to scaling in axion string networks
• New Perspectives on Axion Misalignment Mechanism
• Early Structure Formation Constraints on the Ultra-Light Axion in the Post-Inflation Scenario
• Relaxation times for Bose-Einstein condensation in axion miniclusters
• Global view of QCD axion stars
• Global cosmic string networks as a function of tension
• LHC Searches for Dark Matter in Compressed Mass Scenarios: Challenges in the Forward Proton Mode
• Cosmological Structure Formation and Soliton Phase Transition in Fuzzy Dark Matter with Axion Self-Interactions
• Topological susceptibility of $N_f=2+1$ QCD from staggered fermions spectral projectors at high temperatures
• The Structure of the Oscillon: The Dynamics of Attractive Self-Interaction
• The meso-inflationary QCD axion
• Relaxation times for Bose-Einstein condensation by self-interaction and gravity
• Probing Relativistic Axions from Transient Astrophysical Sources
• Modifying PyUltraLight to model scalar dark matter with self-interactions
• Gravitational waves from non-Abelian gauge fields at a tachyonic transition
• Generation of Primordial Black Holes and Gravitational Waves from Dilaton-Gauge Field Dynamics
• Finite Volume at Two-loops in Chiral Perturbation Theory
• Nonperturbative structure in coupled axion sectors and implications for direct detection
• Testing kinetically coupled inflation models with CMB distortions
• Gamma-ray lines may reveal the CP nature of the dark matter particle

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• Kinetic relaxation and nucleation of Bose stars in self-interacting wave dark matter
• Detecting Dark Matter Substructures on Small Scales with Fast Radio Bursts
• Detecting Axion Dark Matter with Black Hole Polarimetry
• Axion star condensation around primordial black holes and microlensing limits
• NuSTAR as an Axion Helioscope
• Novel standard candle: Collapsing axion stars
• On the Galactic radio signal from stimulated decay of axion dark matter
• Weak nuclear decays deep-underground as a probe of axion dark matter
• Detection of dilute axion stars with stimulated decay
• Detecting dilute axion stars constrained by fast radio bursts in the Solar System via stimulated decay
• Earth-lens telescope for distant axion-like particle sources with stimulated backward reflection
• Gravitational wave and dark matter from Axion-Higgs string
• Dark-Matter-Deficient Galaxies from Collisions: A New Probe of Bursty Feedback and Dark Matter Physics
• Exploring the viability of pseudo Nambu-Goldstone boson as ultralight dark matter in a mass range relevant for strong gravity applications
• How light can ALP dark matter be?
• Supercooled Audible Axions