MHD Dynamo: Plasma Flow to Magnetic Fields

This lecture covers the basics of magnetohydrodynamics (MHD) dynamo, focusing on the process of magnetic field generation by the inductive action of a conductive fluid. Topics include the homopolar disk dynamo, dynamo theorems, solar surface and interior rotation, MHD induction equation, Reynolds number, and the Babcock-Leighton mechanism. The lecture also discusses the consequences of a high magnetic Reynolds number, the Q-effect, and the a-effect in the context of dynamo theory. It concludes with a discussion on the challenges of numerical simulations in understanding dynamo processes.