Evolution of X-ray Binaries andthe Formation of Binary PulsarsXiang-Dong LiDepartment of AstronomyNanjing University2011-5-11
2011-5-11 1 Evolution of X-ray Binaries and the Formation of Binary Pulsars Xiang-Dong Li Department of Astronomy Nanjing University
Millisecond Pulsar (MSP)-X-ray BinaryXRB) Relation-10101<.10"G10-1MytVery,youngFOE10MY...10°GpulsarsCrab10°M..[sseoo10My.3037B10FMy.1510MY..B1913+10minKepieriandisk10737-3037GiraveyardptoouCFODTOO....De20★SNRassociationsASGRIAXPARadioquietLLLU10-110810~310~210Period (s)ATNFPSRDatabase2011-5-11
2011-5-11 2 Millisecond Pulsar (MSP)-X-ray Binary (XRB) Relation ATNF PSR Database
Spin Frequency Distribution in LMXBs5Nuclear-poweredPulsarsAccretion-poweredPulsars4seisson320400100200300500600700SpinFrequency[Hz]2011-5-11
2011-5-11 3 Spin Frequency Distribution in LMXBs
Binary Pulsar PopulationsObservationalMain typeSub-typeexamplesPSR J0437-4715RecycledPSR+low-massPSR + (He) WDPSRJ1640+2224comp.(Mc≤0.45M。)1. PSR + NS (double)1.PSRB1913+16MildlyrecycledPSR+2.PSRJ1435-61002. PSR + (ONeMg)WDhigh-masscompactcomp3. PSR + (CO) WD3.PSRJ2145-0750(0.5≤Mc/M。≤1.4)(CO) WD + PSRPSRB2303+46Non-recycled pulsar1. PSR + B-type comp.1.PSRB1259-63Un-evolved companion2.PSR+low-massMS2.PSR B1820-11comp.2011-5-11A
2011-5-11 4 Main type Sub-type Observational examples Recycled PSR + low-mass comp.(MC≤ 0.45M⊙) PSR + (He) WD PSR J0437-4715 PSR J1640+2224 Mildly recycled PSR + high-mass compact comp. (0.5≤MC /M⊙≤1.4) 1. PSR + NS (double) 2. PSR + (ONeMg) WD 3. PSR + (CO) WD 1. PSR B1913+16 2. PSR J1435-6100 3. PSR J2145-0750 Non-recycled pulsar (CO) WD + PSR PSR B2303+46 Un-evolved companion 1. PSR + B-type comp. 2. PSR + low-mass MS comp. 1. PSR B1259-63 2. PSR B1820-11 Binary Pulsar Populations
Binary Pulsar PopulationsEccentricOrbitsCircularOrbitsNSHeWDsLowB,ShortPMid-longBMid-longONeMgWDsMid-longB,Mid-longPCOWDSMS,BeMidB,MidpHighB,LongP~90%ofbinarysystemsFromBreton(2009)2011-5-11
2011-5-11 5 Binary Pulsar Populations From Breton (2009)