SIMBAD references

2009ApJ...693L.109K - Astrophys. J., 693, L109-L112 (2009/March-2)

Constraints on pulsar evolution: the joint Period-Spin-Down distribution of millisecond pulsars.


Abstract (from CDS):

We calculate the joint period-spin-down (P-) distributions of millisecond radio pulsars (MSRPs) for the standard evolutionary model in order to test whether the observed MSRPs are the unequivocal descendants of millisecond X-ray pulsars (MSXPs). The P- densities implied by the standard evolutionary model compared with observations suggest that there is a statistically significant overabundance of young/high magnetic field MSRPs. Taking biases due to observational selection effects into account, it is unlikely that MSRPs have evolved from a single coherent progenitor population that loses energy via magnetic dipole radiation after the onset of radio emission. By producing the P- probability map, we show with more than 95% confidence that the fastest spinning millisecond pulsars with high magnetic fields, e.g., PSR B1937+21, cannot be produced by the observed MSXPs within the framework of the standard model.

Abstract Copyright:

Journal keyword(s): pulsars: general - pulsars: individual: B1937+21 - stars: neutron - stars: statistics - X-rays: binaries

Simbad objects: 22

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