Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..521w&link_type=abstract
International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 521 - 522
Astronomy and Astrophysics
Astrophysics
4
Radio Galaxies: Filaments, Radio Galaxies: Jets, Radio Galaxies: X Rays
Scientific paper
The authors have observed the nearby radio galaxy Cen A (NGC 5128) with the ROSAT HRI. With a distance of about 3 Mpc, this object contains the closest of the three extragalactic jets which have been studied in X-rays. The authors confirm the existence of separate knots of X-ray emission which are coincident with the radio-knots. The angular scale of 15 pc arcsec-1 now permits to resolve the jet laterally even in the X-ray domain and to study the morphology of the jet in detail. The authors do not detect a counter-jet, but the HRI images reveal an X-ray filament which is associated with the shock front of the southern inner radio lobe (on the counter-jet side). This filament probably traces shock-heated gas. In addition the authors detect diffuse emission from the host galaxy of the AGN which is partially absorbed by the cold matter of the prominent absorption band on the line of sight towards the nucleus of NGC 5128.
Döbereiner Stephan
Junkes Norbert
Wagner Stefan J.
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