Active Galactic Nuclei Web Page

Active galactic nuclei (AGN) seem to be highly energetic galactic cores where a supermassive black hole resides. This causes a number of very itneresting effects:

  1. Depending on the wavelength being studied, there is a very small angular size to the core.
  2. AGNs seem to have a very high luminosity, on the order of "agnprop_1.gif".
  3. AGNs emit a broadband flux of radiation from a few to a few hundred keV.
  4. AGNs have very prominant emission lines.
  5. AGNS can exhibit variability over certain time scales.
  6. AGNs emissions are between 0.5% - 2% linearly polarized as opposed to ~0.5% for normal stellar emissions.
  7. AGNs exhibit strong radio emissions.

AGN Theory

AGN Evolution

AGN Energetics


Absorption and outflow

Host galaxies

Broad-Line Region

Cold Gas Near an AGN

Linking AGN and Galaxy Formation

AGN Observations

Finding AGNs

X-Ray and gamma-ray emission

Radio emission

Emission lines

Multiwave Evidence of Physical Processes

X-Ray Survey Results

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