Our analysis of a short Chandra ACIS observation of PSR J1740+1000 has shownthat it is a bright Xray source with the spectrum dominated by thermalemission. The spectrum fits best with a twocomponent b
We propose four 120 ks XMMNewton observations of 1H0707495 simultaneously withfour 30 ks Chandra HETGSobservations to test for the first time the generaltheory of relativity in a strong gravitational
Massive stars have strong winds, which collide in massive binaries, giving riseto hard and varying Xray emission. Cyg OB2 #5 is such a case. It was recentlyfound to be a quadruple system and changes i
