# Nature and Nurture: a Model for Soft Gamma-Ray Repeaters

@article{Zhang2000NatureAN,
title={Nature and Nurture: a Model for Soft Gamma-Ray Repeaters},
author={Bing Zhang and Renxin Xu and G. J. Qiao Nasagsfc and Nrc Research Associate and Pennsylvania State University and CAS-PKU BACAstronomy Dept. Pku and Ccast},
journal={The Astrophysical Journal},
year={2000},
volume={545}
}
• Bing Zhang
• Published 11 October 2000
• Physics, Geology
• The Astrophysical Journal
During supernova explosions, strange stars with almost bare quark surfaces may be formed. Under certain conditions, these stars could be rapidly spun down by the torque exerted by the fossil disks formed from the fallback materials. They may also receive large kicks and hence have large proper-motion velocities. When these strange stars pass through the spherical "Oort" comet cloud formed during the presupernova era, they will capture some small-scale comet clouds and collide with some comet…
26 Citations
Structure of Pair Winds from Compact Objects with Application to Emission from Hot Bare Strange Stars
• Physics
• 2004
We present the results of numerical simulations of stationary, spherically outflowing, e± pair winds, with total luminosities in the range 1034–1042 ergs s−1. In the concrete example described here,
Magnetars: fact or fiction?
• Physics
• 2011
Anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are enigmatic pulsar-like objects. The energy budget is the fundamental problem in their studies. In the magnetar model, they are
Investigation of the asteroid–neutron star collision model for the repeating fast radio bursts
• Physics, Geology
Monthly Notices of the Royal Astronomical Society
• 2019
The origin of fast radio bursts (FRBs) is still a mystery. One model proposed to interpret the only known repeating object, FRB 121102, is that the radio emission is generated from asteroids
Bare Strange Quark Stars: Formation and Emission
Recent achievements of bare strange stars are briefly reviewed. A nascent protostrange star should be bare because of strong mass ejection and high temperature after the supernova detonation flame,
Radiation from hot, bare, strange stars
• Physics
• 2003
We present the results of numerical simulations of stationary, spherically outflowing, e ′ pair winds, with total luminosities of L = 10 3 5 -10 4 2 erg s - 1 . These results have direct relevance to
Magnetars and Pulsars: A Missing Link
There is growing evidence that soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are isolated neutron stars with superstrong magnetic fields, i.e., magnetars, marking them a
Diagnosing magnetars with transient cooling
• Physics
• 2002
Transient X-ray emission, with an approximate t-0.7 decay, was observed from SGR 1900+14 over 40 days following the giant flare of 1998 August 27. We calculate in detail the diffusion of heat to the
Ultra-High-Energy Cosmic Rays from Hypothetical Quark Novae
• Physics
• 2005
We explore the acceleration of ions in the quark nova (QN) scenario, in which a neutron star experiences an explosive phase transition into a quark star (born in the propeller regime). In this
Nonlinear Electrodynamics and the Surface Redshift of Pulsars
• Physics
• 2004
It is currently argued that the best method of determining neutron star (NS) fundamental properties is by measuring the gravitational redshift z of spectral lines produced in the stellar photosphere.
Anomalous X-ray pulsars and soft gamma-ray repeaters in supernova remnants
• Physics
• 2001
Important constraints on the properties of the anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) can be provided by their associations with supernova remnants (SNRs). We have made a

## References

SHOWING 1-10 OF 43 REFERENCES
Yet another model of soft gamma repeaters
• Physics, Geology
• 1994
We develop a model of soft gamma repeaters (SGRs) in which a supernova leaves planets orbiting a neutron star in intersecting orbits. These planets will collide in approximately 10(exp 4) yr if their
Formation of very strongly magnetized neutron stars - Implications for gamma-ray bursts
• Physics
• 1992
It is proposed that the main observational signature of magnetars, high-field neutron stars, is gamma-ray bursts powered by their vast reservoirs of magnetic energy. If they acquire large recoils,
Can comet clouds around neutron stars explain gamma-ray bursts?
• Physics, Geology
• 1986
The proposal of Harwit and Salpeter (1973) that gamma-ray bursts are due to impacts of comets onto neutron stars is examined further. It is assumed that most stars are formed with comet clouds
Are Soft γ-Ray Repeaters Strange Stars?
• Physics
• 1998
The soft $\ensuremath{\gamma}$-ray repeaters (SGRs) are proposed to result from young, magnetized strange stars with superconducting cores. As such a strange star spins down, the quantized vortex
The Eddington Limit and Soft Gamma Repeaters
Observed intensities and inferred distances of soft gamma repeaters imply luminosities in excess of the nominal (electron-scattering opacity) Eddington limit by four to six orders of magnitude. I
A giant periodic flare from the soft γ-ray repeater SGR1900+14
• Physics
Nature
• 1999
Soft γ-ray repeaters are transient sources of high-energy photons; they emit sporadic and short (about 0.1 s) bursts of ‘soft’ γ-rays during periods of activity, which are often broken by long
Model for the 5 March 1979 gamma-ray transient.
• Physics
Physical review letters
• 1986
A model is proposed for the 5 March 1979 ..gamma..-ray transient. A small lump of strange matter, previously ejected from a supernova explosion, struck a slowly rotating strange star. This resulted
Encounters between degenerate stars and extrasolar comet clouds
• Physics
• 1989
Under the assumption that the presence of comet clouds around otherwise normal stars is a common occurrence in the Galaxy, the observational consequences of random penetration encounters between the
The Soft Gamma Repeaters as Very Strongly Magnetized Neutron Stars. II. Quiescent Neutrino, X-Ray, and Alfvén Wave Emission
• Physics
• 1996
We calculate the quiescent X-ray, neutrino, and Alfven wave emission from a neutron star with a very strong magnetic field, Bdipole ~ 1014 − 1015 G and Binterior ~ (5–10) × 1015 G. These results are
An X-ray pulsar with a superstrong magnetic field in the soft γ-ray repeater SGR1806 − 20
• Physics
Nature
• 1998
Soft γ-ray repeaters (SGRs) emit multiple, brief (∼0.1-s), intense outbursts of low-energy γ-rays. They are extremely rare—three are known in our Galaxy and one in the Large Magellanic Cloud. Two