Populating the Galaxy with pulsars I: stellar & binary evolution
arXiv:0805.0059 · doi:10.1111/j.1365-2966.2008.13402.x
Abstract
The computation of theoretical pulsar populations has been a major component of pulsar studies since the 1970s. However, the majority of pulsar population synthesis has only regarded isolated pulsar evolution. Those that have examined pulsar evolution within binary systems tend to either treat binary evolution poorly or evolve the pulsar population in an ad-hoc manner. Thus no complete and direct comparison with observations of the pulsar population within the Galactic disk has been possible to date. Described here is the first component of what will be a complete synthetic pulsar population survey code. This component is used to evolve both isolated and binary pulsars. Synthetic observational surveys can then be performed on this population for a variety of radio telescopes. The final tool used for completing this work will be a code comprised of three components: stellar/binary evolution, Galactic kinematics and survey selection effects. Results provided here support the need for further (apparent) pulsar magnetic field decay during accretion, while they conversely suggest the need for a re-evaluation of the assumed \textit{typical} MSP formation process. Results also focus on reproducing the observed diagram for Galactic pulsars and how this precludes short timescales for standard pulsar exponential magnetic field decay. Finally, comparisons of bulk pulsar population characteristics are made to observations displaying the predictive power of this code, while we also show that under standard binary evolutionary assumption binary pulsars may accrete much mass.
26 pages, 16 figures, 1 table, accepted for publication in MNRAS
References in corpus (14)
- The ATNF Pulsar Catalogue
- Neutron Star Observations: Prognosis for Equation of State Constraints
- Theory of Core-Collapse Supernovae
- The Supernova Channel of Super-AGB Stars
- Formation and evolution of compact binaries in globular clusters: II. Binaries with neutron stars
- Accretion to Magnetized Stars through the Rayleigh-Taylor Instability: Global Three-Dimensional Simulations
- Evidence for 1122 Hz X-Ray Burst Oscillations from the Neutron-Star X-Ray Transient XTE J1739-285
- Population synthesis of radio and gamma-ray millisecond pulsars from the Galactic disk
- Orbital eccentricities of binary systems with a former AGB star
- Precise Timing of the X-ray Pulsar 1E 1207.4-5209: A Steady Neutron Star Weakly Magnetized at Birth
- The birth properties of Galactic millisecond radio pulsars
- Screening of the Magnetic Field of Disk Accreting Stars
- Exploration of the $\ps-\pb$ Relation for Wind-Fed X-Ray Pulsars
- Why do millisecond pulsars have weaker magnetic fields compared to ordinary pulsars?