Lectures¶
This page contains links to the recorded lectures and associated materials. Each lecture is accompanied by a set of notes, all linked below.
For students attending the school in person, please use the relevant Slack channels (also linked below each section) to ask questions, raise points for discussion, or comment on the lecture content.
Introduction¶
Slack channel: #summer-school-2021
Prologue: Galaxies in the Universe (12:16 mins) — Tjitske Starkenburg (slides)
Lecture Overview (6:12) — Kathryn V Johnston (notes)
Orbits¶
Kathryn V Johnston (notes, blank notes)
Slack channel: #bads2021-1-orbits
Describing Orbits (9:20)
Orbits in Spherical Potentials (13.27)
Near Circular Orbits in Disks (12:07)
Hamiltonian Description (8:24)
Exploring the Orbital Zoo (13:31)
The Galaxy as a Collection of Orbits¶
Tjitske Starkenburg (notes)
Slack channel: #bads2021-2-collections-of-orbits
Examples (18:41)
Jeans Equations (20:59)
How and Why Galaxies Evolve¶
Martin Weinberg (notes)
Slack channel: #bads2021-3-evolution-of-galaxies
Fundamentals
Adiabatic Invariance and the Averaging Theorem (15:11 mins)
Properties of Hamiltonians (5:51 mins)
Invariance of Actions (15:14 mins)
Application to a Disk Galaxy
Setting up the calculation (16:01)
Treating the Denominator (15:00)
Classic Interaction Calculations
Dynamical Friction (25:50)
Impulsive Encounters (19:46)
Secular Evolution and Modes: Spiral Arms¶
Elena D’Onghia (notes)
Slack channel: #bads2021-4-modes-and-spiral-arms
Statement of Problem (21:24)
Instabilities and Waves (22:57)
Swing Amplification (18:47)