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What is an active galactic nucleus?
An active galactic nucleus is a compact region at the centre of a galaxy which has a higher than normal luminosity over a portion of the electromagnetic spectrum.
What is a BL Lac object?
A BL Lac object is a term used in astronomy for a type of active galaxy with an active galactic nucleus.
What has the author B M Peterson written?
B. M. Peterson has written: 'Emission Lines in Active Galaxies: New Methods and Techniques: Iau Colloquim 159' 'Ground-based studies of emission-line variability' -- subject(s): Astrophysics, Optical data processing 'An introduction to active galactic nuclei' -- subject(s): Active galactic nuclei
Identify all the bodies in space that emit light?
Some bodies in space that emit light include stars, galaxies, and active galactic nuclei. Stars emit light through nuclear fusion in their cores, while galaxies and active galactic nuclei emit light from the energy produced by supermassive black holes at their centers.
Would life on Earth be affected by a close Active Galactic Nuclei?
Yes - those emit a lot of radiation, some of it quite dangerous.
Does the Milky Way Galaxy have an active galactic nucleus?
Our Milky Way has a supermassive black hole at its nucleus. It is an active radio source. It is probably not a Seyfert galaxy, which is a galaxy of a type characterized by a bright compact core that shows strong infrared emission, though.
What is the meaning of galactic?
Of/to do with a galaxy.
What do active galaxies differ from normal galaxies?
Galaxies that emit much more radiation (different types of radiation) than a typical galaxy. This actually happens in the galaxy's center, so it's more accurate to talk about an active galactic nucleus. The active galactic nucleus is believed to be caused by a black hole. From Wikipedia: " The radiation from AGN is believed to be a result of accretion of mass by a supermassive black hole at the centre of its host galaxy."
What is AGB slot?
An AGB (Active Galactic Nucleus) slot refers to a specific range in the luminosity or energy output of galaxies that host active galactic nuclei, where the activity of supermassive black holes is particularly pronounced. In this context, "slot" can denote a range of parameters, such as black hole mass or accretion rates, that correlate with the observable properties of the AGN. This concept is crucial for understanding the relationship between black hole growth and galaxy evolution.
Is galaxy an adjective?
No. Galaxy is a noun. The adjective form is galactic.
What object is believed to reside at the center of Active Galactic Nuclei?
The center of many galaxies is suspected to house a "supermassive black hole". The black hole may even weigh more than all the stars in that galaxy combined. Spiral galaxies are more likely to contain a supermassive black hole.
Why are cosmic rays produced?
The origin of cosmic rays, which are actually not electromagnetic radiation but rather particles, protons and atomic nuclei - continues to be mysterious, but they are believed to be created during supernova explosions, and also likely created by active galactic nuclei.
