Real and counterfeit cores: how feedback expands halos and disrupts tracers of inner gravitational potential in dwarf galaxies

• Published in: arXiv.org
• Main Authors: Jahn, Ethan D, Sales, Laura V, Marinacci, Federico, Vogelsberger, Mark, Torrey, Paul, Jia Qi, Smith, Aaron, Li, Hui, Kannan, Rahul, Burger, Jan D, Zavala, Jesús
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 01.10.2021
• Subjects: Astronomical models; Cold dark matter; Counterfeit; Dark matter; Density; Dwarf galaxies; Feedback; Finite element method; Galactic evolution; Galactic halos; Initial conditions; Interstellar matter; Physics - Astrophysics of Galaxies; Rotation; Star & galaxy formation; Star formation; Stars & galaxies; Velocity distribution

The tension between the diverging density profiles in Lambda Cold Dark Matter (\(\Lambda\)CDM) simulations and the constant-density inner regions of observed galaxies is a long-standing challenge known as the `core-cusp' problem. We demonstrate that the \texttt{SMUGGLE} galaxy formation model i...