The 2007 outburst of the X-ray binary XTE J1856+053
The 2007 outburst of the X-ray binary XTE J1856+053
On 28 February 2007 a new outburst of the previously known transient source XTE J1856+053 was detected with RXTE/ASM. We present here the results of an XMM-Newton (0.5-10.0 keV) Target of Opportunity observation performed on 14 March 2007, aimed at constraining the mass of the compact object in this X-ray …