Deep observation of the giant radio lobes of Centaurus A with the Fermi Large Area Telescope R.-Z. Yang, N. Sahakyan, E. de Ona Wilhelmi, F. Aharonian and F. Rieger A&A, 542 (2012) A19 Published online: 28 May 2012 DOI: 10.1051/0004-6361/201118713