Density profiles of sub-halos and dSph galaxies of the Milky Way

• Antragsteller: Professor Dr. Pavel Kroupa
• Fachliche Zuordnung: Astrophysik und Astronomie
• Förderung: Förderung von 2007 bis 2015
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 39953056

• Erstellungsjahr: 2017

Zusammenfassung der Projektergebnisse

A partial solution to the core/cusp problem is proposed within the dark-matter models, but this is not fully convincing. Nevertheless, the cusp/core problem by itself cannot be used to reject the standard dark-matter based models. The now-famous “too-big-to-fail problem” was discovered first in this project, but not named as such. Given many other problems, many of which are very serious for the dark-matter models, a very different approach has also been studied. This approach assumes there is no cosmologically-relevant dark matter but that effective gravitation is non-Newtonian. In Milgromian gravity, the cusp/core problem does not exist, but further work is needed to establish if self-consistent galaxy formation simulations form the observed baryonic density profiles. Explicit predictions become possible and allow Milgromian dynamics to be tested by observation.

Projektbezogene Publikationen (Auswahl)

• 2009, A&A, 502, 733–747: “Density profiles of dark matter haloes on galactic and cluster scales”
  Del Popolo, A., & Kroupa, P.
  
• 2009, MNRAS, 400, 766–774: “Angular momentum transfer and the size-mass relation in early-type galaxies”
  Cardone, V. F., Del Popolo, A., & Kroupa, P.
  
• 2010, A&A, 523, A32–A54: “Local-Group tests of dark-matter concordance cosmology. Towards a new paradigm for structure formation”
  Kroupa, P., Famaey, B., de Boer, K. S., et al.
  
• 2014, MNRAS, 441, 2497–2507: “A census of the expected properties of classical Milky Way dwarfs in Milgromian dynamics”
  Lüghausen, F., Famaey, B., & Kroupa, P.