On the observability of T Tauri accretion shocks in the X-ray band G. G. Sacco, S. Orlando, C. Argiroffi, A. Maggio, G. Peres, F. Reale and R. L. Curran A&A, 522 (2010) A55 Published online: 01 November 2010 DOI: 10.1051/0004-6361/201014950