Distinguishing thermal histories of dark matter from structure formation
arXiv:2306.00065 · doi:10.1088/1475-7516/2024/01/023
Abstract
It is important to understand the implications of current observational constraints and potential signatures on the thermal history of dark matter. In this paper, we build the connection between the present-day velocities and the production mechanism of dark matter and find that the current observation on structure formation can be imposed to constrain the decoupling temperatures and the phase-space distribution of dark matter. We further explore the potential of distinguishing different possible thermal histories of dark matter with hypothetical future observational data. Using the freeze-in/-out scenarios as templates, we find that future precision data may uniquely identify the allowed parameter spaces for freeze-in and freeze-out, or even completely rule out one of the scenarios. This method can be more generally applied to other scenarios.
48 pages, 14 figures, 1 table, to match the published version
References in corpus (28)
- A direct empirical proof of the existence of dark matter
- Ultralight scalars as cosmological dark matter
- Challenges for CDM: An update
- The Dawn of FIMP Dark Matter: A Review of Models and Constraints
- Wave Dark Matter
- Constraints on the Dark Matter Particle Mass from the Number of Milky Way Satellites
- Constraints from Ly- forests on non-thermal dark matter including resonantly-produced sterile neutrinos
- The Fast Fourier Transform Telescope
- Strongest model-independent bound on the lifetime of Dark Matter
- Cold keV dark matter from decays and scatterings
- Hidden Sector Hydrogen as Dark Matter: Small-scale Structure Formation Predictions and the Importance of Hyperfine Interactions
- keV Sterile Neutrino Dark Matter from Singlet Scalar Decays: The Most General Case
- Lyman- constraints on freeze-in and superWIMPs
- Cosmological Simulations of Decaying Dark Matter: Implications for Small-scale Structure of Dark Matter Halos
- Analytical Approach to Subhaloes Population in Dark Matter Haloes
- Dark-Matter Decays and Self-Gravitating Halos
- Warm Dark Matter Constraints Using Milky-Way Satellite Observations and Subhalo Evolution Modeling
- Dark-matter decays and Milky Way satellite galaxies
- Revisiting Dark Matter Freeze-in and Freeze-out through Phase-Space Distribution
- Origins of Hidden Sector Dark Matter II: Collider Physics
- Self-interacting freeze-in dark matter in a singlet doublet scenario
- Dark matter freeze-in from semi-production
- A direct and robust method to observationally constrain the halo mass function via the submillimeter magnification bias: Proof of concept
- Virial halo mass function in the cosmology
- Dark matter amnesia in out-of-equilibrium scenarios
- Evaluating Lyman- Constraints for General Dark-Matter Velocity Distributions: Multiple Scales and Cautionary Tales
- Dark matter halo mass functions and density profiles from mass and energy cascade
- On constraining Cosmology and the Halo Mass Function with Weak Gravitational Lensing