High Velocity Neutron Stars and Gamma-Ray Bursts (AIP Conference Proceedings)
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High Velocity Neutron Stars and Gamma-Ray Bursts (AIP Conference Proceedings)

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Published by American Institute of Physics .
Written in English


  • Astrophysics,
  • Stars, interstellar matter,
  • Science,
  • Science/Mathematics,
  • Physics,
  • Science / Nuclear Physics,
  • Nuclear Physics

Book details:

Edition Notes

ContributionsRichard E. Rothschild (Editor), R.E. Lingenfelter (Editor)
The Physical Object
Number of Pages282
ID Numbers
Open LibraryOL12137454M
ISBN 101563965933
ISBN 109781563965937

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Abstract. We investigate the viability of the Galactic corona model of γ-ray bursts by calculating the spatial distribution of neutron stars born with high velocities in the Galactic disk, and comparing the resulting brightness and angular distribution with the BATSE by: 8. Following the discovery by BATSE that the faint bursts are distributed isotropically on the sky, Galactic halo and corona models found new favor (see, e.g., Brainerd , Li and Dermer , Smith and Lamb ) as an attractive way of reconciling all of the evidence about gamma-ray bursts which favors Galactic neutron stars with isotropy. As is well known, the spectral features, the time histories and the X-ray tails present in some γ-ray bursts suggest that they may arise from galactic neutron stars. But, low velocity neutron stars born in the Galactic disk would concentrate toward the galactic plane and center, and could not fit Author: Daming Wei, Tan Lu. Gamma-ray bursts from planetoid accretion onto fast galactic neutron stars Conference Colgate, S A ; Leonard, P J.T. We propose a Galactic model for the isotropic component of gamma-my bursts (GB`s) based upon high-velocity neutron stars (NS`s) that have accretion disks.

Long GRBs: massive stars Collapsar model. As of , there is almost universal agreement in the astrophysics community that the long-duration bursts are associated with the deaths of massive stars in a specific kind of supernova-like event commonly referred to as a collapsar or hypernova. Very massive stars are able to fuse material in their centers all the way to iron, at . A neutron star is the collapsed core of a giant star which before collapse had a total mass of between 10 and 29 solar n stars are the smallest and densest stars, excluding black holes and hypothetical white holes, quark stars, and strange stars. Neutron stars have a radius on the order of 10 kilometres ( mi) and a mass of about solar masses. Gamma-Ray Bursts (GRBs) are short and intense pulses of soft γ-rays. The bursts last from a fraction of a second to several hundred seconds. GRBs arrive from cosmological distances from random directions in the sky. The overall observed fluences range from 10−4ergs/cm2 to 10−7ergs/cm2 (the lower limit depends, of course, on the. Cyclotron Resonant Scattering in the Spectra of Gamma-Ray Bursts to be high velocity neutron stars, and gamma-ray bursts. a larger scale than cyclotron resonant scattering in a neutron.

Request PDF | Gamma-Ray Bursts | Historical developments in the field of gamma-ray bursts are briefly reviewed. Both observational and theoretical progresses are discussed. Steps | . Neutron stars may be too weak to power some gamma-ray bursts A new analysis suggests that the remnant from a long-duration gamma-ray burst is most likely a black hole, not a neutron star. NEUTRON STARS, GAMMA RAY BURSTS, and BLACK HOLES (chap. 22 in textbook) We will review the classes of remnants that can be left behind a star at the end of its life. We have already discussed the remnants of low-mass stars: white dwarfs. The following diagram may clarify, and is a useful review of stellar evolution. NEUTRON STARS, GAMMA RAY BURSTS, and BLACK HOLES (chap. 22 in textbook) Neutron Stars For carbon detonation SN ⇒ probably no remnant For core-collapse SN ⇒ remnant is a neutron-degenerate core ⇒ neutron star Densities ~ to g/cm3 ~ billion times denser than water Cubic centimeter contains ~ million tons! Like a single.