The impact of baryonic physics on the structure of dark matter haloes: the view from the FIRE cosmological simulations

@article{Chan2015TheIO,
  title={The impact of baryonic physics on the structure of dark matter haloes: the view from the FIRE cosmological simulations},
  author={T. K. Chan and D. Kerevs and J. Onorbe and P. Hopkins and A. Muratov and C. Faucher-Gigu{\`e}re and E. Q. U. S. Diego and Mpia and Caltech and Northwestern and U. Berkeley},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2015},
  volume={454},
  pages={2981-3001}
}
We study the distribution of cold dark matter (CDM) in cosmological simulations from the FIRE (Feedback In Realistic Environments) project, for M_* ∼ 10^(4–11) M_⊙ galaxies in M_h ∼ 10^(9–12) M_⊙ haloes. FIRE incorporates explicit stellar feedback in the multiphase interstellar medium, with energetics from stellar population models. We find that stellar feedback, without ‘fine-tuned’ parameters, greatly alleviates small-scale problems in CDM. Feedback causes bursts of star formation and… Expand
FIRE in the field: Simulating the threshold of galaxy formation
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SIDM on FIRE: hydrodynamical self-interacting dark matter simulations of low-mass dwarf galaxies.
TLDR
SIDM appears to be much more robust to the inclusion of (potentially uncertain) baryonic physics than CDM on this mass scale, suggesting that SIDM will be easier to falsify thanCDM using low-mass galaxies. Expand
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Testing feedback-modified dark matter haloes with galaxy rotation curves: estimation of halo parameters and consistency with ΛCDM scaling relations
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Low-mass "dwarf" galaxies represent the most significant challenges to the cold dark matter (CDM) model of cosmological structure formation. Because these faint galaxies are (best) observed withinExpand
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