The X-ray view of giga-hertz peaked spectrum radio galaxies O. Tengstrand, M. Guainazzi, A. Siemiginowska, N. Fonseca Bonilla, A. Labiano, D. M. Worrall, P. Grandi and E. Piconcelli A&A, 501 1 (2009) 89-102 Published online: 29 April 2009 DOI: 10.1051/0004-6361/200811284