Universal gravothermal evolution of isolated self-interacting dark matter halos for velocity-dependent cross sections

Abstract

We study the evolution of isolated self-interacting dark matter (SIDM) halos using spherically-symmetric gravothermal equations allowing for the scattering cross section to be velocity dependent. We focus our attention on the large class of models where the core is in the long mean free path regime for a substantial time. We find that the temporal evolution exhibits an approximate universality that allows velocity-dependent models to be mapped onto velocity-independent models in a well-defined way using the scattering timescale computed when the halo achieves its minimum central density. We show how this timescale depends on the halo parameters and an average cross section computed at the central velocity dispersion when the central density is minimum. The predicted collapse time is fully defined by the scattering timescale, with negligible variation due to the velocity dependence of the cross section. We derive new self-similar solutions that provide an analytic understanding of the numerical results.

arXiv commentMatched to the published version

References in corpus (42)

• A Universal Density Profile from Hierarchical Clustering
• Observational evidence for self-interacting cold dark matter
• Cold collapse and the core catastrophe
• Dark Matter Self-interactions and Small Scale Structure
• Observational and Theoretical Constraints on Singular Dark Matter Halos
• The cored distribution of dark matter in spiral galaxies
• Dark Matter Halos as Particle Colliders: A Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters
• Mass Density Profiles of LSB Galaxies
• Beyond Collisionless Dark Matter: Particle Physics Dynamics for Dark Matter Halo Structure
• Cold dark matter: controversies on small scales
• The unexpected diversity of dwarf galaxy rotation curves
• Hidden Charged Dark Matter
• Dark and luminous matter in THINGS dwarf galaxies
• Cores in Dwarf Galaxies from Dark Matter with a Yukawa Potential
• Core Formation in Dwarf Halos with Self Interacting Dark Matter: No Fine-Tuning Necessary
• The distribution of dark matter in galaxies
• How the Self-Interacting Dark Matter Model Explains the Diverse Galactic Rotation Curves
• Self-Interacting Dark Matter from a Non-Abelian Hidden Sector
• Self-Interacting Dark Matter Halos and the Gravothermal Catastrophe
• Gravothermal collapse of isolated self-interacting dark matter haloes: N-body simulation versus the fluid model
• Direct Detection Portals for Self-interacting Dark Matter
• Supermassive Black Holes from Ultra-Strongly Self-Interacting Dark Matter
• Observable tests of self-interacting dark matter in galaxy clusters: cosmological simulations with SIDM and baryons
• Constraining Dissipative Dark Matter Self-Interactions
• Constraining Velocity-dependent Self-Interacting Dark Matter with the Milky Way's dwarf spheroidal galaxies
• Reconciling the Diversity and Uniformity of Galactic Rotation Curves with Self-Interacting Dark Matter
• Accelerated core collapse in tidally stripped self-interacting dark matter halos
• Too Big To Fail in Light of Gaia
• Velocity-dependent Self-interacting Dark Matter from Groups and Clusters of Galaxies
• A Testable Conspiracy: Simulating Baryonic Effects on Self-Interacting Dark Matter Halos
• Gravothermal Collapse of Self-Interacting Dark Matter Halos and the Origin of Massive Black Holes
• Observable tests of self-interacting dark matter in galaxy clusters: BCG wobbles in a constant density core
• Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering
• Diversity in density profiles of self-interacting dark matter satellite halos
• Core-collapse, evaporation and tidal effects: the life story of a self-interacting dark matter subhalo
• The diverse dark matter density at sub-kiloparsec scales in Milky Way satellites:implications for the nature of dark matter
• The Onset of Gravothermal Core Collapse in Velocity Dependent Self-Interacting Dark Matter Subhaloes
• The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles
• Velocity Dependence from Resonant Self-Interacting Dark Matter
• The Semi-Classical Regime for Dark Matter Self-Interactions
• A Practical and Consistent Parametrization of Dark Matter Self-Interactions
• From dwarf galaxies to galaxy clusters: Self-Interacting Dark Matter over 7 orders of magnitude in halo mass

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• Dianoga SIDM: galaxy cluster self-interacting dark matter simulations
• Cosmological and idealized simulations of dark matter haloes with velocity-dependent, rare and frequent self-interactions
• Self-interacting dark matter interpretation of Crater II
• Tidal evolution of cored and cuspy dark matter halos
• Numerical Challenges in Modeling Gravothermal Collapse in Self-Interacting Dark Matter Halos
• Gravothermal collapse and the diversity of galactic rotation curves
• Dynamical friction from self-interacting dark matter
• SIDM Concerto: Compilation and Data Release of Self-interacting Dark Matter Zoom-in Simulations
• Exploring Self-Interacting Dark Matter Halos with Diverse Baryonic Distributions: A Parametric Approach
• SASHIMI-SIDM: Semi-analytical subhalo modelling for self-interacting dark matter at sub-galactic scales
• Simulations of galaxy cluster mergers with velocity-dependent, rare and frequent self-interactions
• Gravothermal Catastrophe in Resonant Self-interacting Dark Matter Models
• A possible challenge for Cold and Warm Dark Matter
• Early formation of supermassive black holes from the collapse of strongly self-interacting dark matter
• SHARP -- IX. The dense, low-mass perturbers in B1938+666 and J0946+1006: implications for cold and self-interacting dark matter
• Gravothermalizing into primordial black holes, boson stars, and cannibal stars
• A Universal Analytic Model for Gravitational Lensing by Self-Interacting Dark Matter Halos
• Core Collapse Beyond the Fluid Approximation: The Late Evolution of Self-Interacting Dark Matter Halos
• Constraints on dark matter models from the stellar cores observed in ultra-faint dwarf galaxies: Self-interacting dark matter
• Semi-Analytic Modeling of Dark Matter Subhalo Encounters with Thin Stellar Streams: Statistical Predictions for GD-1-like Streams in CDM
• Self-Interacting Dark Matter with Mass Segregation: A Unified Explanation of Dwarf Cores and Small-Scale Lenses
• An Interpretable AI Framework to Disentangle Self-Interacting and Cold Dark Matter in Galaxy Clusters: The CKAN Approach
• Calibrating the SIDM Gravothermal Catastrophe with N-body Simulations