Fanaroff-Riley 1 Radio Galaxy

Home
chevron_right
Gallery
chevron_right
Fanaroff-Riley 1 Radio Galaxy

Fanaroff-Riley 1 and 2 (FR-1 and FR-2) labels come from a classification system developed by B.L. Fanaroff and J.M. Riley that is used to identify radio galaxies with active galactic nuclei based on the brightness of their radio emissions. FR-1’s are radio sources whose luminosity decreases as the distance from the central galaxy host increases and can be signposts for galaxy clusters. FR-II’s are sources that exhibit increasing brightness in the outer lobes.

Credit: VLASS (NRAO/AUI/NSF)

Facebook

Twitter

Active Galaxies Galaxies

Download Image download

Hi-Res Full-Size

359 x 269

22 KB

download

contract Media Use Policy

More Active Galaxies Images & Videos

The Baseline 7: Mapping The Radio Sky

NRAO’s Baseline Episode 3: Viewing Active Galaxies

NRAO’s Baseline Episode 2: A Black Hole Eats A Star

Double Boomerang

EHT image of quasar 3C 279

Centaurus A in Radio

01 – ALMA Top 10: Messier 87 The Very First Image of a Black Hole

A Universe Full of Radio Galaxies

The National Radio Astronomy Observatory is a facility of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
	Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
	The U.S. National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."
	AUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. We cultivate excellence, deliver value, enhance education, and engage the public.