Gamma-ray bursts from fast, Galactic neutron stars

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What makes a Galacic model of gamma-ray bursts (GBs) feasible is the observation of a new population of objects, fast neutron stars, that are isotropic with respect to the Galaxy following a finite period, {approximately}30My, after their formation. Our Galactic model for the isotropic component of (GBs) is based upon these high-velocity neutron stars (NSs) that have accretion disks. The fast NSs are formed in tidally locked binaries, where tidal locking occurs due to the meridional circulation caused by the conservation of angular momentum of the tidal lobes. These same lobes perturb the subsequent collapse to a supernova and forming ... continued below

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6 p.

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Colgate, S.A. & Leonard, P.J.T. July 1, 1995.

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  • Colgate, S.A. Los Alamos National Lab., NM (United States)
  • Leonard, P.J.T. Maryland Univ., College Park, MD (United States). Dept. of Astronomy

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Description

What makes a Galacic model of gamma-ray bursts (GBs) feasible is the observation of a new population of objects, fast neutron stars, that are isotropic with respect to the Galaxy following a finite period, {approximately}30My, after their formation. Our Galactic model for the isotropic component of (GBs) is based upon these high-velocity neutron stars (NSs) that have accretion disks. The fast NSs are formed in tidally locked binaries, where tidal locking occurs due to the meridional circulation caused by the conservation of angular momentum of the tidal lobes. These same lobes perturb the subsequent collapse to a supernova and forming a slowly rotating NS. Following the collapse to a NS and explosion, subsequent accretion occurs on the rear side of the initially perturbed NS, resulting in a run-away acceleration of the neutron star by neutrino emission from the hot accreted matter. The recoil momentum of the relativistic neutrino emission from the localized, down flowing matter far exceeds the momentum drag of the accreted matter. The recoil of the NS may be oriented towards the companion, but misses because of the initial orbital motion. The near miss captures matter from the companion and forms a disk around the NS. Accretion onto the neutron star from this initially gaseous disk due to the ``alpha`` viscosity results initially in the soft gamma-ray repeater phase, {approximately}10{sup 4} yr. After the neutron star has moved {approximately}30 kpc from its birthplace, solid bodies form in the disk, and accrete to planetoid size bodies after {approximately}3 {times} 10{sup 7} years. Some of these planetoid bodies, with a mass of {approximately}10{sup 21to22} g, are perturbed into being captured by the magnetic field of the NS to create GBs. The high velocity and millions of years delay in forming planetoids, results in isotropy.

Physical Description

6 p.

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OSTI as DE95015319

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  • AIP workshop on high velocity neutron stars, La Jolla, CA (United States), 15 Apr 1995

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  • Other: DE95015319
  • Report No.: LA-UR--95-1735
  • Report No.: CONF-9504198--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 106464
  • Archival Resource Key: ark:/67531/metadc621575

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • July 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • March 1, 2016, 4:32 p.m.

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Colgate, S.A. & Leonard, P.J.T. Gamma-ray bursts from fast, Galactic neutron stars, article, July 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc621575/: accessed April 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.