Structure and Subhalo Population of Halos in a Self-Interacting Dark Matter Cosmology

Abstract

We study the structure of Milky Way (MW)- and cluster-sized halos in a Lambda Cold Dark Matter (CDM) cosmology with self-interacting (SI) dark particles. The cross section per unit of particle mass has the form sigma = sig_0(1/v_100)^alpha, where sig_0 is a constant in units of cm^2/gr and v_100 is the relative velocity in units of 100 km/s. Different values for sigma with alpha= 0 or 1 were used. For small values of sigma = const. (sig_0<0.5), the core density of the halos at z=0 is typically higher at a given mass for lower values of sig_0 or, at a given sig_0, for lower masses. For values of sig_0 as high as 3.0, the halos may undergo the gravothermal catastrophe before z=0. When alpha = 1, the core density of cluster- and MW-sized halos is similar. Using sigma = 0.5-1.0x(1/v_100), our predictions agree with the central densities and the core scaling laws of halos both inferred from the observations of dwarf and LSB galaxies and clusters of galaxies. The cumulative Vmax-functions of subhalos in MW-sized halos with (sig_0,alpha) = (0.1,0.0), (0.5,0.0) and (0.5,1.0) agree roughly with observations (luminous satellites) for Vmax > 30 km/s, while at Vmax = 20 km/s the functions are a factor 5-8 higher, similar to the CDM predictions. The halos with SI have slightly more specific angular momentum at a given mass shell and are rounder than their CDM counterparts. We conclude that the introduction of SI particles with sigma \propto 1/v_100 may remedy the cuspy core problem of the CDM cosmogony, while the subhalo population number remains similar to that of the CDM halos.

arXiv commentTo appear in ApJ, December 20, 2002. We added plots showing the evolution of the heat capacity profile for halos in the core expansion and gravothermal catastrophe phases. Minor changes in the text were introduced

References in corpus (50)

• Dark Matter Substructure in Galactic Halos
• Where are the missing galactic satellites?
• Observational evidence for self-interacting cold dark matter
• The Structure of Dark Matter Haloes in Dwarf Galaxies
• Concentrations of Dark Halos from their Assembly Histories
• A universal angular momentum profile for galactic halos
• Observational and Theoretical Constraints on Singular Dark Matter Halos
• Adaptive Refinement Tree - a new high-resolution N-body code for cosmological simulations
• Mass Density Profiles of LSB Galaxies
• Galaxies in N-body simulations: overcoming the overmerging problem
• Resolving the Structure of Cold Dark Matter Halos II
• Dark Matter Scaling Relations
• The dark and baryonic matter content of low surface brightness disk galaxies
• Halo Properties in Cosmological Simulations of Self-Interacting Cold Dark Matter
• The Dark Matter Distribution in Disk Galaxies
• Detailed Mass Map of CL0024+1654 from Strong Lensing
• Properties of spherical galaxies and clusters with an NFW density profile
• The X-ray virial relations for relaxed lensing clusters observed with Chandra
• Weakly Self-Interacting Dark Matter and the Structure of Dark Halos
• Formation and structure of halos in a warm dark matter cosmology
• The Angular Momentum of Gas in Proto-Galaxies I. Implications for the Formation of Disk Galaxies
• Constraints on the Structure of Dark Matter Halos from the Rotation Curves of Low Surface Brightness Galaxies
• Joint Formation of QSOs and Spheroids: QSOs as clocks of star formation in Spheroids
• Self-Interacting Dark Matter Halos and the Gravothermal Catastrophe
• On Formation and Evolution of Disk Galaxies: Cosmological Initial Conditions and the Gravitational Collapse
• A Test of the Collisional Dark Matter Hypothesis from Cluster Lensing
• High Resolution Rotation Curves of Low Surface Brightness Galaxies
• The structure and evolution of weakly self-interacting cold dark matter halos
• Chandra measurements of the distribution of mass in the luminous lensing cluster Abell 2390
• The Angular Momentum Content of Dwarf Galaxies: New Challenges for the Theory of Galaxy Formation
• CDM and Strong Lensing: Concord or Conflict?
• Accurate Determination of the Mass Distribution in Spiral Galaxies: II. Testing the Shape of Dark Halos
• Halpha rotation curves: the soft core question
• A Quantitative Study of Interacting Dark Matter in Halos
• Evidence of self-interacting cold dark matter from galactic to galaxy cluster scales
• Collisional versus Collisionless Dark Matter
• Limits on Collisional Dark Matter from Elliptical Galaxies in Clusters
• The constant density region of the dark halos of spiral galaxies
• Chandra Observations of the Lensing Cluster EMSS 1358+6245: Implications for Self-Interacting Dark Matter
• Collisional Dark Matter and the Origin of Massive Black Holes
• Collisional dark matter and the structure of dark halos
• Chandra observations of the galaxy cluster Abell 1835
• Giant cluster arcs as a constraint on the scattering cross-section of dark matter
• Disc galaxy evolution models in a hierarchical formation scenario: structure and dynamics
• The time-scale for core collapse in spherical star clusters
• Density profiles of dark matter haloes: diversity and dependence on environment
• Constraints on dark matter physics from dwarf galaxies through galaxy cluster haloes
• Observational Constraints on the Self Interacting Dark Matter Scenario and the Growth of Supermassive Black Holes
• The Density Profile of the Dark Matter Halo of NGC 4605
• The Angular Momentum Distribution within Halos in Different Dark Matter Models

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• Constraints on the Self-Interaction Cross-Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657-5
• Cosmological Simulations with Self-Interacting Dark Matter I: Constant Density Cores and Substructure
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• Cosmological Simulations with Self-Interacting Dark Matter II: Halo Shapes vs. Observations
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• The role of baryons in self-interacting dark matter mergers
• Local Group star formation in warm and self-interacting dark matter cosmologies
• SN-driven mechanism of cusp-core transformation: an appraisal
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• A tight scaling relation of dark matter in galaxy clusters
• Micro galaxies in LCDM
• Testing the parametric model for self-interacting dark matter using matched halos in cosmological simulations
• Asymmetric dark matter with a spontaneously broken $U(1{)}^{\prime }$: self-interaction and gravitational waves
• X-ray morphology of cluster-mass haloes in self-interacting dark matter
• The Dark Halo of NGC 5963 as a Constraint on Dark Matter Self-Interaction at the Low Velocity Regime
• Probing galaxy density profiles with future supernova surveys
• Self-Interacting Dark Matter and the Delay of Super-Massive Black Hole Growth
• Matching the mass function of Milky Way satellites in competing dark matter models
• Comparing Implementations of Self-Interacting Dark Matter in the Gizmo and Arepo Codes
• Constraints on dark matter self-interaction from galactic core size
• Subhalo effective density slope measurements from HST strong lensing data with neural likelihood-ratio estimation
• Probing Self-interacting Dark Matter with Disk Galaxies in Cluster Environments
• Inferring subhalo effective density slopes from strong lensing observations with neural likelihood-ratio estimation
• Self-Interacting Dark Matter from Gravitational Scattering
• Early formation of supermassive black holes from the collapse of strongly self-interacting dark matter
• Self-Interacting Dark Matter Scattering Rates Through Cosmic Time
• Conservation of radial actions in time-dependent spherical potentials
• Kinematic signatures of impulsive supernova feedback in dwarf galaxies
• SHARP -- IX. The dense, low-mass perturbers in B1938+666 and J0946+1006: implications for cold and self-interacting dark matter
• Understanding Galaxy Formation and Evolution
• A MARVEL-ous study of how well galaxy shapes reflect Dark Matter halo shapes in Cold Dark Matter Simulations
• The imprint of dark matter on the Galactic acceleration field
• Core collapse in resonant self-interacting dark matter across two decades in halo mass
• Unequal-mass mergers of dark matter haloes with rare and frequent self-interactions
• Dark matter haloes in the multicomponent model. III. From dwarfs to galaxy clusters
• Calibrating the SIDM Gravothermal Catastrophe with N-body Simulations