Abstract
We have observed the nearby radio galaxy Centaurus 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. We confirm the existence of separate knots of X-ray emission which are coincident with the radioknots. The angular scale of 15 pc arcsec−1 now permits us to resolve the jet laterally even in the X-ray domain and to study the morphology of the jet in detail. We 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 we 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 NGC5128.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Burns J.O., Feigelson E.D., Schreier E.J., 1983, ApJ 273, 128
Clarke D.A., Burns J.O., Feigelson E.D., 1986, ApJ 300, L41
Clarke D.A., Burns J.O., Norman M.L., 1992, ApJ 395, 444
Feigelson E.D., Schreier E.J., Delvaille J.P., Giacconi R., Grindlay J.E., and Lightman A.P., 1981, ApJ 251, 31
Joy M., Harvey P.M., Tollestrup E.V., Selgren K., McGregor P.J., and Hyland A.R., 1991, ApJ 366, 82
Kellermann K.I., 1974, ApJ Lett. 194, 135
Kinzer R.L., Johnson W.N., Kurfess J.D., Strickman M.S., Grove J.E., et al., 1994, in The Second Compton Symposium, Eds. C. Fichtel, N. Gehrels, and J.P. Norris. AIP Conf. Proc. 304, 531
rganti R., Fosbury R.A.E., Hook R.N., Robinson A., and Tsvetanov Z., 1992, MNRAS, 256, 1P
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1996 Springer-Verlag
About this paper
Cite this paper
Wagner, S.J., Döbereiner, S. (1996). X-ray observations of Cen A. In: Kundt, W. (eds) Jets from Stars and Galactic Nuclei. Lecture Notes in Physics, vol 471. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0102613
Download citation
DOI: https://doi.org/10.1007/BFb0102613
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-61136-3
Online ISBN: 978-3-540-49953-4
eBook Packages: Springer Book Archive