PIRSA:14110145 Scientific Series Strong Gravity

DOI10.48660/14110145

Series: Strong Gravity

Navarro, J. (2014). Dwarf Galaxies as Cosmological Probes. Perimeter Institute. https://pirsa.org/14110145

Navarro, Julio. Dwarf Galaxies as Cosmological Probes. Perimeter Institute, Nov. 27, 2014, https://pirsa.org/14110145 

@misc{ pirsa_PIRSA:14110145,
  doi = {10.48660/14110145},
  url = {https://pirsa.org/14110145},
  author = {Navarro, Julio},
  keywords = {Strong Gravity},
  language = {en},
  title = {Dwarf Galaxies as Cosmological Probes},
  publisher = {Perimeter Institute},
  year = {2014},
  month = {nov},
  note = {PIRSA:14110145 see, \url{https://pirsa.org}}
}

Abstract

A prime challenge to our understanding of galaxy formation concerns the scarcity of dwarf galaxies compared with the numerous low-mass halos expected in the current ΛCDM paradigm. This is usually accounted for by assuming that energetic feedback from evolving stars confines dwarf galaxy formation to relatively massive halos spanning a narrow mass range. I will highlight a number of observations that may be used to test this assumption and discuss the puzzles and challenges that arise from this analysis. I will also discuss a number of challenges that ΛCDM faces on the scale of dwarf galaxies and their possible resolutions.

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