Where Centaurus A gets its X-ray knottiness - AstrophysicsReport as inadecuate

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Abstract: We report an X-ray spectral study of the transverse structure of theCentaurus A jet using new data from the Chandra Cen A Very Large Project. Wefind that the spectrum steepens with increasing distance from the jet axis, andthat this steepening can be attributed to a change in the average spectrum ofthe knotty emission. Such a trend is unexpected if the knots are predominantlya surface feature residing in a shear layer between faster and slower flows. Wesuggest that the spectral steepening of the knot emission as a function ofdistance from the jet axis is due to knot migration, implying a component oftransverse motion of knots within the flow.

Author: D.M. Worrall, M. Birkinshaw, R.P. Kraft, G.R. Sivakoff, A. Jordan, M.J. Hardcastle, N.J. Brassington, J.H. Croston, D.A. Evans, W

Source: https://arxiv.org/

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