Astronomy   View all facts   Glossary   Help
physical object > natural object > celestial body > radio source > Centaurus A
Next radio sourceLupus Loop    Upradio source, X-ray source    Previous radio sourceCassiopeia A   

Centaurus A comparison table
Subject is a kind of has catalog has wavelength is an instance of has synonym has definition has distance
radio sourcecelestial bodyradio source catalogradio  A source of extraterrestrial radio radiation. The strongest known is Cassiopeia A, followed by Cyg A and the Crab Nebula (Tau A) (the capital letters following the name of a constellation refer to the radio sources of the constellation, A being the strongest source). Radio sources are divided into two main categories: Class I, those associated with our Galaxy (which is a weak radio source), and Class II, extragalactic sources. Most radio sources are galaxies, supernova remnants, or H II regions. 
X-ray sourcecelestial body X-ray  A class of celestial objects whose dominant mechanism of energy dissipation is through X-ray emission. Galactic X-ray sources appear optically as starlike objects, peculiar in their ultraviolet intensity, variability (on time scales ranging from milliseconds to weeks), and spectral features. All known compact X-ray sources are members of close binary systems; a current popular model is mass accretion onto a compact object from a massive companion. (Four X-ray sources - all variable - are known to be associated with globular clusters.) The 21 known extended X-ray sources associated with clusters of galaxies seem to be clouds of hot gas trapped in the cluster's gravitational field. 
Centaurus A radio source catalogX-rayX-ray sourceNGC 5128A strong radio source. Optically, it is an elliptical galaxy with a dark obscuring lane. It is the nearest known violent galaxy.4 Mpc

Next radio sourceLupus Loop    Upradio source, X-ray source    Previous radio sourceCassiopeia A