Active%20Versus%20Normal%20Galaxies

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Active Versus Normal Galaxies
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Optical Spectrum of a Typical Active Galaxy
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Optical Spectra of Active Galaxies
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X-ray Emission from an Active Galactic Nucleus
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Broad-Band Spectrum of an Active Galaxy
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Variability of Active Galaxies
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Rapid X-ray Variability of Active Galaxies
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Evidence for Relativistic Motions from X-ray
Spectroscopy
XMM-Newton
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Particle Jets from Active Galaxies
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Particle Jets from NGC 6251
Notice the collimation on a huge range of size
scales.
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The Particle Jet from M87
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Historical Overview of Early Active Galaxy Studies
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Artists Impression of the Black-Hole
Accretion-Disk Model
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Innermost Part of the Accretion Disk
Surface of the Sun
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Model for Jet Formation
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Active Galaxies are Common
The Chandra Deep Field-North
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Cosmic Evolution of Luminous Quasars
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Lack of Spectral Evolution
Optical spectra do not evolve significantly
X-ray-to-optical flux ratio does not evolve
significantly
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Some Active Galaxy Researchers
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A Supermassive Black Hole in Hibernation at the
Center of Our Galaxy
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Hibernating Supermassive Black Holes in Most
Galaxies
This strong relation suggests a link between
galaxy formation and the growth of supermassive
black holes.
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Feedback from Active Galaxy Winds?
Wind
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Feedback from Active Galaxy Winds?