2S 1553-54: Swift/XRT position
2s-2p Transitions in the Spectra of CA XVII and TI XIX
2s-photoionisation of atomic magnesium: Shake processes and Coster-Kronig radiationless decay
2S1145-619 - an X-ray pulsar in an eccentric binary system
2S1417-624 - A variable galactic X-ray source near CG312-1
2U 0900-40: a black hole?
2U 1700-37: another black hole?
2XMM J010247.4-720449 is a Be/X-ray binary, detected in outburst with Swift
2XMM J083026+524133: The most X-ray luminous cluster at redshift 1
2XMM J100451.6+411627: A cool core cluster at z=0.82
2XMMi J225036.9+573154 - a new eclipsing AM Her binary discovered using XMM-Newton