Sentences with phrase «other galactic nuclei»

Not exact matches

In addition to the bright and chaotic features, each merging galaxy of NGC 5256 contains an active galactic nucleus, where gas and other debris are fed into a hungry supermassive black hole.

Although the origin of the gamma rays is still being investigated, their discovery suggests the flaring behaviour of Cygnus X-3 is an even better analogue to that of quasars and other types of flaring galaxies known as «active galactic nuclei» (AGN) than previously thought.

«There's a general consensus that the very brightest active galactic nuclei are the result of major mergers,» he says, «but for the run - of - the - mill AGNs, other processes might be more important.»

There have been a number of mechanisms proposed for quenching, for example «feedback» from supernovae or active galactic nuclei which breaks up the star forming clouds and reduces the star formation rate, but the measurement and verification of yet other possible processes is of great importance.

Science Interests Formation of galaxies and black holes in the early universe and their growth over cosmic time; large surveys with Hubble and other telescopes to discover new populations of distant galaxies and black holes; physical properties of active galactic nuclei using observations from radio, infrared, optical, ultraviolet through to X-ray energies.

The nuclear region of M87 is known as an «active galactic nucleus» due to its brightness in visible, x-ray, radio, and other wavelengths of light.

While other objects in the universe generate cosmic rays, most probably active galactic nuclei located far beyond our own Milky Way galaxy, supernovae in our own galactic neighborhood are thought to produce a large fraction of the cosmic rays that impact Earth.