Astro 1: `Slides' for Class 25 - Active Galaxies and Quasars

Comparison of active and normal galaxies

The active galaxy Markarian 421 seen across the electromagnetic spectrum

The black hole plus accretion disk model for the center of an active galaxy

Examples of active galaxy variability

The optical spectrum of the quasar 3C 273

Composite radio (red) and optical (blue) image of the active galaxy 3C 219

The spectacular radio jet of the nearby active galaxy M87

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