This article contains lists of quasars. More than a million quasars have been observed, so any list on Wikipedia is necessarily a selection of them. Proper naming of

quasar A quasar is an extremely luminous active galactic nucleus (AGN). It is pronounced , and sometimes known as a quasi-stellar object, abbreviated QSO. This emission from a galaxy nucleus is powered by a supermassive black hole with a mass rangi ...

s are by Catalogue Entry, Qxxxx±yy using

B1950 In astronomy, an equinox is either of two places on the celestial sphere at which the ecliptic intersects the celestial equator. Although there are two such intersections, the equinox associated with the Sun's ascending node is used as the conv ...

coordinates, or QSO Jxxxx±yyyy using

J2000 In astronomy, an epoch or reference epoch is a moment in time used as a reference point for some time-varying astronomical quantity. It is useful for the celestial coordinates or orbital elements of a celestial body, as they are subject to per ...

coordinates. They may also use the prefix QSR. There are currently no quasars that are visible to the naked eye.

List of quasars

This is a list of exceptional quasars for characteristics otherwise not separately listed

List of named quasars

This is a list of quasars, with a common name, instead of a designation from a survey, catalogue or list.

List of multiply imaged quasars

This is a list of quasars that as a result of

gravitational lens A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer that is capable of bending the light from the source as the light travels toward the observer. This effect is known ...

ing appear as multiple images on Earth.

List of visual quasar associations

This is a list of double quasars, triple quasars, and the like, where quasars are close together in line-of-sight, but not physically related.

List of physical quasar groups

This is a list of binary quasars, trinary quasars, and the like, where quasars are physically close to each other.

Large Quasar Groups

Large quasar group A large quasar group (LQG) is a collection of quasars (a form of supermassive black hole active galactic nuclei) that form what are thought to constitute the largest astronomical structures in the observable universe. LQGs are thought to be precu ...

s (LQGs) are bound to a filament of mass, and not directly bound to each other.

List of quasars with apparent superluminal jet motion

This is a list of quasars with jets that appear to be

superluminal Faster-than-light (also FTL, superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light (). The special theory of relativity implies that only particles with z ...

due to relativistic effects and line-of-sight orientation. Such quasars are sometimes referred to as ''superluminal quasars''. Quasars that have a recessional velocity greater than the speed of light (''c'') are very common. Any quasar with z > 1 is receding faster than ''c'', while z exactly equal to 1 indicates recession at the speed of light. Early attempts to explain superluminal quasars resulted in convoluted explanations with a limit of z = 2.326, or in the extreme z < 2.4. The majority of quasars lie between z = 2 and z = 5.

Firsts

Extremes

First quasars found

Most distant quasars

In 1964 a quasar became the most distant object in the universe for the first time. Quasars would remain the most distant objects in the universe until 1997, when a pair of non-quasar galaxies would take the title (galaxies CL 1358+62 G1 & CL 1358+62 G2 lensed by galaxy cluster CL 1358+62).; In cosmic scales distance is usually indicated by

redshift In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light). The opposite change, a decrease in wavelength and simultaneous increase in fr ...

(denoted by ''z'') which is a measure of ''recessional velocity'' and inferred distance due to cosmological expansion.

Most powerful quasars

References

External links

Interactive interface into the catalog of Quasars from the Sloane Digital Sky SurveyKitt Peak Quasar List (1975)
VII/11
Revised and Updated Catalog of Quasi-stellar Objects (1993)
VII/158 {{Portal bar, Stars, Spaceflight, Outer space, Solar System

Quasars A quasar is an extremely luminous active galactic nucleus (AGN). It is pronounced , and sometimes known as a quasi-stellar object, abbreviated QSO. This emission from a galaxy nucleus is powered by a supermassive black hole with a mass rangi ...