A Fallback Disk Accretion-Involved Formation Channel to PSR J1903+0327

Abstract

The discovery of the eccentric binary and millisecond pulsar PSR J1903+03273 has raised interesting questions about the formation mechanisms of this peculiar system. Here we present a born-fast scenario for PSR J1903+03273. We assume that during the supernova (SN) explosion that produced the pulsar, a fallback disk was formed around and accreted onto the newborn neutron star. Mass accretion could accelerate the neutron star's spin to milliseconds, and decrease its magnetic field to $\sim 10^8-10^9$ G, provided that there was sufficient mass ($\sim 0.1 M_{\sun}$) in the fallback disk. The neutron star became a millisecond pulsar after mass accretion terminated. In the meanwhile the binary orbit has kept to be eccentric (due to the SN explosion) for $\sim 10^9$ yr. We have performed population synthesis calculations of the evolutions of neutron stars with a fallback disk, and found that there might be tens to hundreds of PSR J1903+03273-like systems in the Galaxy. This scenario also suggests that some fraction of isolated millisecond pulsars in the Galactic disk could be formed through the same channel.

17 pages, 2 figures, accepted to ApJ

References in corpus (10)

• The Supernova -- Gamma-Ray Burst Connection
• Explosions of O-Ne-Mg Cores, the Crab Supernova, and Subluminous Type II-P Supernovae
• The Supernova Channel of Super-AGB Stars
• Multi-Dimensional Simulations of the Accretion-Induced Collapse of White Dwarfs to Neutron Stars
• Fallback and Black Hole Production in Massive Stars
• An Eccentric Binary Millisecond Pulsar in the Galactic Plane
• Constraining population synthesis models via empirical binary compact object merger and supernovae rates
• Chandra View of DA 530: A Sub-Energetic Supernova Remnant with a Pulsar Wind Nebula?
• A population synthesis study on the faint X-ray sources in the Galactic center region
• The Eccentric Binary Millisecond Pulsar in NGC 1851

Cited by in corpus (9)

• Formation of the Galactic Millisecond Pulsar Triple System PSR J0337+1715 - a Neutron Star with Two Orbiting White Dwarfs
• On the Maximum Mass of Neutron Stars
• The formation of the eccentric-orbit millisecond pulsar J1903+0327 and the origin of single millisecond pulsars
• The influence of fallback discs on the spectral and timing properties of neutron stars
• PSR J1903+0327 : A Unique Milli-Second Pulsar with a Main-Sequence Companion Star
• Implications of the measured parameters of PSR J1903+0327 for its progenitor neutron star
• Where do the Progenitors of Millisecond Pulsars come from?
• Can eccentric binary millisecond pulsars form by accretion induced collapse of white dwarfs?
• A Strange Star Scenario for the Formation of Eccentric Millisecond Pulsar PSR J1946+3417