Sprecher/in: Elena Asencio (University of Bonn)

Titel: The classical Milky Way satellites are perturbed by the Milky Way tides

Zusammenfassung: Most of the Milky Way classical satellites are known to display signs of tidal disturbance (e.g. tidal tails, asymmetries in their density distribution, squashed shapes, etc.). However, this cannot be explained in the standard model of cosmology (LCDM) due to the fact that, for this framework, the self-gravity of these satellites is too strong for them to be affected by the Milky Way gravitational tides. In this work, we demonstrate that most of the classical satellites are expected to be tidally perturbed in MOND and that their degree of (observed) disturbance is generally in good agreement with MOND expectations. Since gravitational tides can also enhance the velocity dispersion of the satellites, we argue that MOND is consistent with the high velocities that Júlio et al. 2025 found for some of the classical satellites.

• Datum:
  1. Dezember 2025, 15:00 – 16:00
  
  
• Ort:

  AIP; Kirch-Haus, Konferenzraum

  
  
• Kontakt:
  Marcel Pawlowski
  mpawlowski@aip.de