Oscillations vs. relaxation in galactic dynamics

Add to your list(s) Download to your calendar using vCal

• Mahir Hadžić (University College London)
• Monday 21 November 2022, 14:00-15:00
• CMS, MR13.

If you have a question about this talk, please contact Daniel Boutros.

We give an overview of recent developments in the stability study of nontrivial equilibria in Newtonian (Vlasov-Poisson) and relativistic (Einstein-Vlasov) galactic dynamics. In the Newtonian setting we discuss the existence of linear oscillating modes and the validity of the gravitational Landau damping in this context. In the relativistic setting we show that the classical Antonov linear stability criterion is not true: steady galaxies with very dense cores lead to existence of growing modes. Our results highlight the importance of the Hamiltonian structure of these systems. The talk is based on published and ongoing works with Z. Lin, G. Rein, M. Schrecker, and C. Straub.

This talk is part of the Partial Differential Equations seminar series.

This talk is included in these lists:

• All CMS events
• All Talks (aka the CURE list)
• CMS Events
• CMS, MR13
• DPMMS Lists
• DPMMS Pure Maths Seminar
• DPMMS info aggregator
• DPMMS lists
• Hanchen DaDaDash
• Interested Talks
• My seminars
• Partial Differential Equations seminar
• School of Physical Sciences
• bld31

Note that ex-directory lists are not shown.