XMM-Newton observations of XTE J1817-330 and XTE J1856+053

The black hole candidate XTE J1817‐330 was discovered in outburst on 26 January 2006 with RXTE/ASM. One year later, another X‐ray transient discovered in 1996, XTE J1856+053, was detected by RXTE during a new outburst on 28 February 2007. We report on the spectra obtained by XMM‐Newton of these two black hole candidates.