agn - 2 Outline Normal (boring) galaxies Active (fun)...

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1 Active Galaxies 2 Outline Normal (boring) galaxies Active (fun) galaxies The extragalactic zoo: Quasars , Blazars , Radio Galaxies , BL Lacs , Seyferts , OVV , GPS , CSO , . .. Components of an active galaxy Supermassive Black Holes Jets Hot spots and the evolution of radio galaxies 3 Seyfert vs Normal Galaxy NGC 5548 (Seyfert) NGC 3277 (normal) 4 HST Observations of Seyfert Galaxies 5 Variability 3C84 6 Normal Galaxies in Radio Continuum M51 - Beck et al.
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2 7 An Active Galaxy M87 Jet discovered by Curtis in 1918 8 An Active Galaxy M87 HST Image M87 Distance = 15 Mpc Jet length = 2 kpc 9 An Active Galaxy M87 VLA and VLBA Radio Images 10 ~20 o VLSS FIELD 1700+690 θ ~80”, rms ~50 mJy The EGRET Era AGN dominate the extragalactic high-energy sky 67 Blazars marginal detection of a couple of radio-galaxies The Fermi Era 1000 Blazars + Many radio-galaxies
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3 13 Cygnus A – prototypical radio galaxy -- FR II Carilli et al. 14 Components of an AGN Core Lobe Jet Counter-Jet Hot spot “core” contains the central engine 30 kpc 15 Clicker Question: What is the ultimate energy source in an Active Galaxy? A: Nuclear fusion in stars.
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This document was uploaded on 12/13/2011.

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agn - 2 Outline Normal (boring) galaxies Active (fun)...

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