The transitory nature of the filaments in NGC 5128 (Centaurus A)

Details The transitory nature of the filaments in NGC 5128 (Centaurus A) The transitory nature of the filaments in NGC 5128 (Centaurus A)

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...269..440g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 269, June 15, 1983, p. 440-443.

Astronomy and Astrophysics

Astrophysics

16

Galactic Nuclei, Galactic Structure, Radial Velocity, Radio Galaxies, Emission Spectra, Spectrum Analysis

Scientific paper

New optical observations demonstrate differential velocities of at least 800 km/s within a group of gaseous filaments near the middle NE radio lobe of the galaxy NGC 5128. These optical fragments are at a projected distance of 30 kpc from the main body of the galaxy and are associated with an extended source of soft X-rays. Compared with reasonable values for the average space velocity of the gas, the internal velocity spread is too high for it to have traveled in its present turbulent state over the full distance from the nucleus. The gaseous filaments, as observed, are evidently only temporary and will disperse over a time of the order of one million to ten million years.

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