G. J. Mathews and J. R. Wilson 1997 ApJ 482 929 doi:10.1086/304166
G. J. Mathews1 and J. R. Wilson2
Show affiliationsWe analyze several aspects of the recently noted neutron star collapse instability in close binary systems. We utilize (3 + 1) dimensional and spherical numerical general relativistic hydrodynamics to study the origin, evolution, and parametric sensitivity of this instability. We derive the modified conditions of hydrostatic equilibrium for the stars in the curved space of quasi-static orbits. We examine the sensitivity of the instability to the neutron star mass and equation of state. We also estimate limits to the possible interior heating and associated neutrino luminosity that could be generated as the stars gradually compress prior to collapse. We show that the radiative loss in neutrinos from this heating could exceed the power radiated in gravity waves for several hours prior to collapse. The possibility that the radiation neutrinos could produce gamma-ray (or other electromagnetic) burst phenomena is also discussed.
binaries: close; gamma rays: theory; stars: evolution; stars: interiors; stars: neutron
Issue 2 (1997 June 20)
Received 1996 June 10, accepted for publication 1997 January 7
G. J. Mathews and J. R. Wilson 1997 ApJ 482 929
Max Tegmark et al. 1997 ApJ 480 22
Myungshin Im et al. 1997 ApJ 475 457