Journey to the Cosmic Core: The Active Galactic Nucleus Quiz

Quasars, short for "quasi-stellar radio sources," are a type of active galactic nucleus (AGN) known for their strong and broad emission lines in their spectra. These broad emission lines result from the rapid motion of gas and dust near the supermassive black hole at the center of a quasar.

Blazars are a specific type of active galactic nucleus (AGN) that includes both flat-spectrum radio quasars and BL Lac objects. They are known for their intense and variable emission across the electromagnetic spectrum and are characterized by the orientation of their relativistic jets, which are aligned in such a way that they appear to point directly toward Earth, making them one of the most luminous and energetic sources in the universe.

LINERs are a type of active galactic nucleus (AGN) that are typically found in low-luminosity galaxies. They are characterized by their relatively weak ionization of the gas in the nuclear regions of these galaxies. 

Seyfert galaxies encompass both radio-loud and radio-quiet objects within their category. These galaxies are known for their active galactic nuclei (AGN), which can exhibit a range of characteristics and emissions, making some of them radio-loud and others radio-quiet.

The Black Eye Galaxy, also known as the Sleeping Beauty Galaxy or Messier 64 (M64), is a spiral galaxy located in the constellation Coma Berenices. While M64 is a visually striking galaxy with a dark band of dust giving it the appearance of a "black eye," it does not have a well-documented active galactic nucleus (AGN) and is not typically associated with the AGN designation. 

Messier 51a, also known as the Whirlpool Galaxy, is a spiral galaxy. It is not typically associated with the AGN designation as it is primarily known for its visual appearance and structure as a prominent spiral galaxy rather than for the presence of an active galactic nucleus.

NGC 5128, also known as Centaurus A, is a well-known galaxy with an active galactic nucleus (AGN) at its center. It is one of the closest radio galaxies to Earth and is a powerful source of radio emissions. The name "Centaurus A" reflects its location in the constellation Centaurus.

The AGN acronym Cygnus A stands for Cygnus A Radio Galaxy, which is a powerful radio source located in the constellation of Cygnus. Cygnus A is a well-known radio galaxy with a strong radio emission source located in the constellation Cygnus. It is one of the most studied radio galaxies and is named after its radio source component.

M87, also known as Virgo A, is a giant elliptical galaxy located in the Virgo cluster. It is known for harboring a supermassive black hole at its center, which is a prominent source of radio emissions and an active galactic nucleus (AGN).

The AGN name for the galaxy NGC 1068 is "Messier 77 (M77)". NGC 1068 is a Seyfert galaxy, meaning it hosts an active galactic nucleus with a supermassive black hole at its center, which produces strong emissions in various wavelengths, including radio, infrared, and X-rays.