The X-ray structure of Centaurus A

Details The X-ray structure of Centaurus A The X-ray structure of Centaurus A

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...251...31f&link_type=abstract

Astrophysical Journal, Part 1, vol. 251, Dec. 1, 1981, p. 31-51. NASA-supported research.

Astronomy and Astrophysics

Astrophysics

164

Galactic Nuclei, Galactic Structure, Radio Galaxies, X Ray Sources, Compton Effect, Luminous Intensity, Main Sequence Stars, Synchrotron Radiation

Scientific paper

The Einstein X-ray observatory imaging detectors have found X-ray emission associated with several components of the nearby radio galaxy Cen A = NGC 5128: (1) the compact nucleus; (2) an X-ray jet pointed toward the NE radio lobes; (3) the middle NE radio lobe; (4) the disk or dust lane; and (5) diffuse emission extending several arcmin around the nucleus. The intensity of the nucleus changed by a factor of seven over six months. The X-ray jet is considered in terms of thermal, inverse Compton, and synchrotron models. The emission of the NE radio lobe is greater than that expected from inverse Compton or synchrotron processes. Two ridges of emission are found along each edge of the dust lane, within several arcmin of the nucleus. The diffuse X-ray component has a luminosity which is too high to be due to bulge population X-ray sources, but which may be produced by main sequence stars under appropriate circumstances.

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