4U 1258-61
4U 1323-62
4U 1323-62
4U 1344-60: a bright intermediate Seyfert galaxy at z=0.012 with a relativistic Fe Kalpha emission line
4U 1538-52
4U 1538-52
4U 1538-52
4U 1543-45
4U 1543-47
4U 1543-47
4U 1608-52
4U 1608-52
4U 1608-52
4U 1608-52 and 4U 1636-53, and the origin of the kHz QPOs in LMXBs
4U 1608-52 is back to quiescence after its 2007-2009 outburst
4U 1608-522 in X-ray outburst
4U 1624-49
4U 1626-67
4U 1626-67
4U 1626-67 - A prograde spinning X-ray pulsar in a 2500 S binary system