definitions

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=__**Definitions:**__= 4000Å. In other words when a "cliff" is made in the spectra on the left side. (only cliff up as shown in picture below).
 * Right Ascension** **and Declination:** are two coordinate points on the celestial sphere (an imaginary sphere surrounding the earth). The **right ascension** (longitudinal angle) is used for locating stars and is centered on the **vernal equinox point** (the point where the sun passes from south to north - between equinoxes) and is the angle of the object east of the vernal equinox point. Declination (latitudinal angle) is the angle above or below the celestial equator.
 * CaII break**: The "calcium break" is an overall decrease in flux on the blue side (the left side) of the spectrum beginning somewhere around the calcium absorption doublet ~
 * Synchrotron radiation**: is electromagnetic radiation (light) but generated by the acceleration of ultrarelativistic charged particles - electrons - (moving near the speed of light) moving through magnetic fields. It is in the AGN’s jet shown below as a line of blue light.