Classification of X-ray BinariesHigh-mass X-ray binaries(wind-fedX-raysources)SupergiantHMXBsBe/X-ray binariesNeutron Starr,= 1550 RBeStarBeiX-rayR, 620 R.BinarySystem(not to scale)r720RLow-mass X-ray binariesIntermediate-massX-raybinaries(disk-fedX-raysources)2011-5-116
2011-5-11 6 Classification of X-ray Binaries High-mass X-ray binaries (wind-fed X-ray sources) Supergiant HMXBs Be/X-ray binaries Low-mass X-ray binaries (disk-fed X-ray sources) Intermediate-mass X-ray binaries
Stability of Mass Transfer The characteristics of binary pulsars dependson mass transfer processes during the XRBphaseThe stability of mass transfer depends on The mass ratio of the donor and accretor The evolutionary state of the donor2011-5-11
2011-5-11 7 Stability of Mass Transfer ◼ The characteristics of binary pulsars depends on mass transfer processes during the XRB phase ◼ The stability of mass transfer depends on ❑ The mass ratio of the donor and accretor ❑ The evolutionary state of the donor