[1] Slovak Univ Technol Bratislava, Fac Mat Sci & Technol Trnava, Adv Technol Res Inst, Bottova 25, Trnava 91724, Slovakia
[2] European Space Astron Ctr, XMM Newton Sci Operat Ctr, Camino Bajo Castillo S-N, E-28692 Madrid, Spain
[3] Kyoto Univ, Grad Sch Sci, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan
[4] Univ Salento, Dept Math & Phys E De Giorgi, Via Arnesano,CP 193, I-73100 Lecce, Italy
[5] INFN, Sez Lecce, Via Arnesano,CP 193, I-73100 Lecce, Italy