Planck intermediate results IX. Detection of the Galactic haze with Planck

P.A.R. Ade, N. Aghanim, M. Arnaud, M. Ashdown, F. Atrio-Barandela, J. Aumont, C. Baccigalupi, A. Balbi, A.J. Banday, R.B. Barreiro, Per Rex Christensen, Pavel Nasselski, Igor Dmitrievich Novikov