# The onset of gravothermal core collapse in velocity-dependent self-interacting dark matter subhaloes

@article{Turner2020TheOO,
title={The onset of gravothermal core collapse in velocity-dependent self-interacting dark matter subhaloes},
author={Hannah C Turner and Mark R. Lovell and Jes{\'u}s Zavala and Mark Vogelsberger},
journal={arXiv: Astrophysics of Galaxies},
year={2020}
}
• Published 6 October 2020
• Physics
• arXiv: Astrophysics of Galaxies
It has been proposed that gravothermal collapse due to dark matter self-interactions (i.e. self-interacting dark matter, SIDM) can explain the observed diversity of the Milky Way (MW) satellites' central dynamical masses. We investigate the process behind this hypothesis using an $N$-body simulation of a MW-analogue halo with velocity dependent self-interacting dark matter (vdSIDM) in which the low velocity self-scattering cross-section, $\sigma_\rmn{T}/m_\rmn{x}$, reaches 100$~$cm$^{2}$g\$^{-1…
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## References

SHOWING 1-10 OF 61 REFERENCES

### Constraining velocity-dependent self-interacting dark matter with the Milky Way’s dwarf spheroidal galaxies

The observed anti-correlation between the central dark matter (DM) densities of the bright Milky Way (MW) dwarf spheroidal galaxies (dSphs) and their orbital pericenter distances poses a potential

### The structure of dissipative dark matter halos

• Physics
Journal of Cosmology and Astroparticle Physics
• 2020
Dissipative dark matter self-interactions can affect halo evolution and change its structure. We perform a series of controlled N-body simulations to study impacts of the dissipative interactions on

### Baryonic clues to the puzzling diversity of dwarf galaxy rotation curves

• Physics
Monthly Notices of the Royal Astronomical Society
• 2020
We use a compilation of disc galaxy rotation curves to assess the role of the luminous component (‘baryons’) in the rotation curve diversity problem. As in earlier work, we find that rotation curve

### Diversity in density profiles of self-interacting dark matter satellite halos

• Physics
Journal of Cosmology and Astroparticle Physics
• 2019
We present results from N-body simulations of self-interacting dark matter (SIDM) subhalos, which could host ultra-faint dwarf spheroidal galaxies, inside a Milky-Way-like main halo. We find that

### Diverse dark matter density at sub-kiloparsec scales in Milky Way satellites: Implications for the nature of dark matter

• Physics
Physical Review D
• 2019
Milky Way (MW) satellites reside within dark matter (DM) subhalos with a broad distribution of circular velocity profiles. This diversity is enhanced with the inclusion of ultrafaint satellites,

### Self-Interacting Dark Matter Subhalos in the Milky Way's Tides.

• Physics
Physical review letters
• 2020
The interaction between the subhalos and the Milky Way's tides lead to more diverse dark matter distributions in the inner region, compared to their cold dark matter counterparts, and the self-interacting dark matter model proposed to explain the diverse rotation curves of spiral galaxies in the field is tested.

### The cores of dwarf galaxy haloes

• Physics
• 1996
We use N-body simulations to examine the effects of mass outflows on the density profiles of cold dark matter (CDM) halos surrounding dwarf galaxies. In particular, we investigate the consequences of

### Resolving the Structure of Cold Dark Matter Halos

• Physics
• 2001
We present results of a convergence study in which we compare the density profiles of cold dark matter halos simulated with varying mass and force resolutions. We show that although increasing the

### Too big to fail in light of Gaia

• Physics
Monthly Notices of the Royal Astronomical Society
• 2019
We point out an anticorrelation between the central dark matter (DM) densities of the bright Milky Way dwarf spheroidal galaxies (dSphs) and their orbital pericenter distances inferred from Gaia