High-energy particle acceleration at the radio-lobe shock of Centaurus A

  title={High-energy particle acceleration at the radio-lobe shock of Centaurus A},
  author={Judith H. Croston and Ralph P. Kraft and Martin J. Hardcastle and Mark Birkinshaw and D. M. Worrall and P. E. J. Nulsen and Robert F. Penna and Gregory R. Sivakoff and Andr{\'e}s Jord{\'a}n and Nicola J. Brassington and D. A. Evans and William R. Forman and Marat Gilfanov and Joanna L Goodger and William E. Harris and C. Jones and Adrienne Marie Juett and Stephen S. Murray and Somak Raychaudhury and Craig L. Sarazin and Rasmus Voss and Kristin A. Woodley},
  journal={Monthly Notices of the Royal Astronomical Society},
We present new results on the shock around the southwest radio lobe of Centaurus A using data from the Chandra Very Large Programme observations (740 ks total observing time). The X-ray spectrum of the emission around the outer southwestern edge of the lobe is well described by a single power-law model with Galactic absorption ‐ thermal models are strongly disfavoured, except in the region closest to the nucleus. We conclude that a significant fraction of the X-ray emission around the southwest… 

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