Active Galactic Nuclei in the Yahoo! Directory

X-Ray Astronomy Group - University of Cambridge
Research of the group focuses on observational studies of active galaxies, clusters of galaxies, elliptical galaxies, and the X-ray background.
www-xray.ast.cam.ac.uk
Imagine the Universe!: Active Galaxies and Quasars
Information about Seyferts, quasars, and blazars.
imagine.gsfc.nasa.gov/docs/science/know_l2/active_galaxies.html
Chandra X-Ray Observatory: Quasars & Active Galaxies
Describes the general properties of these powerful phenomena located at the center of galaxies.
chandra.harvard.edu/xray_sources/quasars.html
Finding Charts for AGN
From the National Heidelberg Observatory.
www.lsw.uni-heidelberg.de/projects/extragalactic/charts.html
ADC Quick Reference: Basic Data on Quasars and AGN
Provides data on quasars, Seyferts, BL Lac objects and optically variable QSOs, and other active galaxies, AGN, and emission-line objects.
adc.gsfc.nasa.gov/adc/quick_ref/ref_quasars.html
HEASARC: Active Galactic Nuclei
Photos and diagrams, spectra, light curves, and other information.
heasarc.gsfc.nasa.gov/docs/objects/agn/agn.html
Quasars and Active Galactic Nuclei
Introduction to the subject of active galactic nuclei, with photos, spectra, and articles.
www.astr.ua.edu/keel/agn
Extragalactic Articles: Active Galaxies
Aggregation of papers on the subject of quasi-stellar objects, very luminous galaxies, and more.
nedwww.ipac.caltech.edu/level5/active_galaxies.html
Active Galaxies Newsletter
Electronic publication dedicated to the observation and theory of active galaxies.
www.ast.man.ac.uk/~rb/agn
Georgia State University: Program in Extragalactic Astronomy, The (PEGA)
Studies the astrophysics of active galactic nuclei (AGN) through photometry and spectroscopy.
www.chara.gsu.edu/PEGA
Active Galaxies & Quasars - Jodrell Bank Observatory
Researching neutral gas and dust in active galaxies, activity in starbursts and Seyfert galaxies, DRAGNs, gravitational lenses, and related matters.
www.jb.man.ac.uk/research/agn