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The 60 pages that link to Active galactic nucleus, each with the reason it gives.

• Infrared astronomyRelated: Dust around the central engine reradiates absorbed energy strongly in the infrared.

• X-ray astronomyRelated: X-rays probe the accretion flow and energetic outflows near the central black hole.

• Cosmic rayRelated: Jets from active galactic nuclei are candidate sources of the most energetic cosmic rays.

• Barred spiral galaxyRelated: Inward gas transport by a bar may contribute to the material available for nuclear activity.

• Galaxy interactionRelated: Gas driven toward a galactic center by an interaction can fuel nuclear activity.

• Galactic windRelated: Its radiation and jets can drive outflows far beyond the galaxy’s central region.

• Star formation rateRelated: Its radiation can mimic or contaminate emission used to estimate a galaxy's rate.

• Galaxy ZooRelated: Galaxy Zoo studies have examined relationships between visible galaxy structure and nuclear activity.

• Very Long Baseline ArrayRelated: VLBA images resolve compact cores and jets in these energetic galaxies.

• Warm–hot intergalactic mediumRelated: Its outflows can transport metals and energy into the surrounding intergalactic medium.

• UhuruRelated: The survey showed that active galaxies are significant cosmic X-ray sources.

• Einstein ObservatoryRelated: Einstein detected and imaged X-ray emission from active galactic nuclei.

• Galactic barRelated: Gas transported inward by a bar may help fuel nuclear activity, though further transport is needed.

• Large Binocular TelescopeRelated: The telescope’s optical and infrared observations can investigate emission from galactic nuclei.

• Ultraluminous infrared galaxyRelated: An obscured active nucleus can contribute substantially to a ULIRG’s infrared output.

• Luminous infrared galaxyRelated: Accretion can heat surrounding dust and contribute substantially to the infrared luminosity.

• Ultra-high-energy cosmic rayRelated: Its jets and outflows are proposed sites for accelerating the most energetic cosmic rays.

• XMM-NewtonRelated: XMM-Newton measures the X-ray emission and variability of accreting galactic cores.

• Arp 220Related: Black-hole activity may contribute to Arp 220’s central energy output alongside its starburst.

• Time-domain astronomyRelated: Variability across timescales probes changing accretion and the structure near its central black hole.

• Peculiar galaxyRelated: An unusually energetic nucleus can distinguish a galaxy even when its overall shape is ordinary.

• Interacting galaxyRelated: Some encounters drive gas toward galactic centers, potentially feeding nuclear activity.

• Lyman-alpha emitterRelated: Some emitters’ strong lines can be powered partly or chiefly by an active nucleus.

• MegamaserRelated: Maser emission can trace molecular gas close to an active nucleus.

• ROSATRelated: ROSAT detected many active galactic nuclei, including objects obscured at other wavelengths.

• Cosmic rays and astroparticlesRelated: Its jets and outflows are candidate accelerators of ultra-high-energy particles.

• Polarization in astronomyRelated: Polarization helps reveal its obscuring material, scattering regions, and jet geometry.