Neutron Star Kicks from Asymmetric Collapse

@article{Fryer2003NeutronSK,
  title={Neutron Star Kicks from Asymmetric Collapse},
  author={Chris L. Fryer},
  journal={The Astrophysical Journal Letters},
  year={2003},
  volume={601},
  pages={L175 - L178}
}
  • Chris L. Fryer
  • Published 10 December 2003
  • Physics
  • The Astrophysical Journal Letters
Many neutron stars are observed to be moving with spatial velocities, in excess of 500 km s-1. A number of mechanisms have been proposed to give neutron stars these high velocities. One of the leading classes of models proposed invokes asymmetries in the core of a massive star just prior to collapse. These asymmetries grow during the collapse, causing the resultant supernova to be also asymmetric. As the ejecta is launched, it pushes off (or "kicks") the newly formed neutron star. This Letter… 

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References

SHOWING 1-10 OF 31 REFERENCES

Double Neutron Star Systems and Natal Neutron Star Kicks

We study the four double neutron star systems found in the Galactic disk in terms of the orbital characteristics of their immediate progenitors and the natal kicks imparted to neutron stars. Analysis

Pulsar Jets: Implications for Neutron Star Kicks and Initial Spins

We study implications for the apparent alignment of the spin axes, proper motion directions, and polarization vectors of the Crab and Vela pulsars. The spin axes are deduced from recent Chandra X-Ray

High birth velocities of radio pulsars

NEUTRON stars are usually born during the supernova explosion of a massive star. Any small asymmetry during the explosion can result in a substantial ‘kick’ velocity1 to the neutron star. Pulsars

Population Syntheses for Neutron Star Systems with Intrinsic Kicks

We use a Monte Carlo binary synthesis code to model the formation and evolution of neutron star systems including high-mass X-ray binaries, low-mass X-ray binaries, double neutron star systems, and

Pulsar recoil and gravitational radiation due to asymmetrical stellar collapse and explosion.

It is predicted that any recoils imparted to the neutron star at birth will result in a gravitational wave strain that does not go to zero with time, and there may be ``memory'' in the gravitational wave form from a protoneutron star that is correlated with its recoil and neutrino emissions.

The Guitar nebula: a bow shock from a slow-spin, high-velocity neutron star

THE observable interactions of neutron stars with their local environment provide an opportunity for measuring the properties of both relativistic pulsar winds and the surrounding interstellar

Neutrino-Nucleon Interactions in Magnetized Neutron-Star Matter: The Effects of Parity Violation

We study neutrino-nucleon scattering and absorption in a dense, magnetized nuclear medium. These are the most important sources of neutrino opacity governing the cooling of a proto-neutron star in

The runaway black hole GRO J1655-40 ⋆

We have used the Hubble Space Telescope to measure the motion in the sky and compute the galactocentric orbit of the black hole X-ray binary GRO J1655-40. The system moves with a runaway space

Mass Limits For Black Hole Formation

We present a series of two-dimensional core-collapse supernova simulations for a range of progenitor masses and different input physics. These models predict a range of supernova energies and compact

Inside the Supernova: A Powerful Convective Engine

Condensed Abstract: We present an extensive study of the inception of supernova explosions by following the evolution of the cores of two massive stars (15 Msun and 25 Msun) in two dimensions. Our