X-rays from accretion shocks in T Tauri stars: The case of BP Tau
  We present an XMM-Newton observation of the classical T Tauri star BP Tau. In the XMM-Newton RGS spectrum the O {\sc vii} triplet is clearly detected with a very weak forbidden line indicating high plasma densities and/or a high UV flux environment. At the same time concurrent UV data point to a small hot spot filling factor suggesting an accretion funnel shock as the site of the X-ray and UV emission. Together with the X-ray data on TW Hya these new observations suggest such funnels to be a general feature in classical T Tauri stars. 
J.H.M.M. Schmitt (1), J. Robrade (1), J.-U. Ness (2), F. Favata (3),   B. Stelzer (4)((1)Hamburger Sternwarte, Hamburg,(2)Un...