On a separatrix in the gravitational collapse to an overcritical electromagnetic black hole

@article{Ruffini2003OnAS,
  title={On a separatrix in the gravitational collapse to an overcritical electromagnetic black hole},
  author={R. Ruffini and Luca Vitagliano and She-sheng Xue},
  journal={Physics Letters B},
  year={2003},
  volume={573},
  pages={33-38}
}
Abstract The dynamical properties of an electron–positron–photon plasma created by the vacuum polarization process occurring around a charged gravitationally collapsing core of an initially neutral star are examined within the framework of general relativity and quantum field theory. The Reissner–Nordstrom geometry is assumed to apply between the collapsing core and the oppositely charged remnant of the star. The appearance of a separatrix at radius R , well outside the asymptotic approach to… Expand

Figures from this paper

Observational signatures of an electromagnetic overcritical gravitational collapse
We present theoretical predictions for the spectral, temporal and intensity signatures of the electromagnetic radiation emitted during the process of the gravitational collapse of a stellar core to aExpand
Neutron star equilibrium configurations within a fully relativistic theory with strong, weak, electromagnetic, and gravitational interactions
Abstract We formulate the equations of equilibrium of neutron stars taking into account strong, weak, electromagnetic, and gravitational interactions within the framework of general relativity. TheExpand
Static and Rotating Neutron Stars in a General Relativistic Formulation of all Fundamental Interactions
We formulate the equations of equilibrium of static neutron stars taking into account strong, weak, electromagnetic, and gravitational interactions within the framework of general relativity. WeExpand
Gravo-thermal catastrophe in gravitational collapse and energy progenitor of Gamma-Ray Bursts
  • S. Xue
  • Physics
  • Journal of Cosmology and Astroparticle Physics
  • 2021
We study the homologous collapse of stellar nuclear core, the virial theorem for hadron collisional relaxations, and photon productions from hadron collisions. We thus show the gravo-thermalExpand
MASS, RADIUS AND MOMENT OF INERTIA OF NEUTRON STARS
We construct the ground-state equilibrium configurations of neutron star cores. The system of equilibrium equations, taking into account quantum statistics, electro-weak, and strong interactions, isExpand
On the Ultra-relativistic Prompt Emission, the Hard and Soft X-Ray Flares, and the Extended Thermal Emission in GRB 151027A
We analyze GRB 151027A within the binary-driven hypernova (BdHN) approach, with progenitor a carbon-oxygen core on the verge of a supernova (SN) explosion and a binary companion neutron star (NS).Expand
Electron-positron pair production in space- or time-dependent electric fields
Treating the production of electron and positron pairs by a strong electric field from the vacuum as a quantum tunneling process we derive, in semiclassical approximation, a general expression forExpand
Black Holes, Supernovae and Gamma Ray Bursts
We review recent progress in our understanding of the nature of Gamma Ray Bursts (GRBs) and in particular, of the relationship between short GRBs and long GRBs. The first example of a short GRB isExpand
Gravitational and electric energies in the collapse of a spherical thin-shell capacitor
We adopt a simplified model describing the collapse of a spherical thin-shell capacitor to give an analytical description how gravitational energy is converted to both kinetic and electric energiesExpand
Electron-positron pair oscillation in spatially inhomogeneous electric fields and radiation
Abstract It is known that strong electric fields produce electron and positron pairs from the vacuum, and due to the back-reaction these pairs oscillate back and forth coherently with the alternatingExpand
...
1
2
...

References

SHOWING 1-10 OF 51 REFERENCES
On the pair electromagnetic pulse of a black hole with electromagnetic structure
We study the relativistically expanding electron- positron pair plasma formed by the process of vacuum polar- ization around an electromagnetic black hole (EMBH). Such processes can occur for EMBH'sExpand
Irreducible mass and energetics of an electromagnetic black hole
Abstract The mass-energy formula for a black hole endowed with electromagnetic structure (EMBH) is clarified for the nonrotating case. The irreducible mass Mirr is found to be independent of theExpand
Particle production in the central rapidity region.
TLDR
The renormalized energy-momentum tensor of the produced particles is computed and the effective pressure, energy, and entropy density are compared to that expected from hydrodynamic models of energy and momentum flow of the plasma. Expand
On plasma oscillations in strong electric fields
Abstract We describe the creation and evolution of electron–positron pairs in a strong electric field as well as the pairs annihilation into photons. The formalism is based on generalized VlasovExpand
On the electromagnetic field of a charged collapsing spherical shell in general relativity
Abstract A new exact solution of the Einstein–Maxwell equations for the gravitational collapse of a shell of matter in an already formed black hole is given. Both the shell and the black hole areExpand
Relative Spacetime Transformations in Gamma-Ray Bursts
GRB 991216 and its relevant data acquired from the BATSE and the Rossi X-Ray Timing Explorer and Chandra satellites are used as a prototypical case to test the theory linking the origin of gamma-rayExpand
On the Structure of the Burst and Afterglow of Gamma-Ray Bursts I
We have recently proposed three paradigms for the theoretical interpretation of gamma-ray bursts (GRBs). (1) The relative space–time transformation (RSTT) paradigm emphasizes how the knowledge of theExpand
On the interpretation of the burst structure of grbs
Given the very accurate data from the BATSE experiment and RXTE and Chandra satellites, we use the GRB 991216 as a prototypical case to test the EMBH theory linking the origin of the energy of GRBsExpand
Fermion pair production in a strong electric field.
TLDR
The method of adiabatic regularization to the Dirac equation is applied in order to renormalize the expectation value of the currect and derive a finite coupled set of ordinary differential equations for the time evolution of the system. Expand
Quantum Electrodynamical Effects in Kerr-Newmann Geometries
Following the classical approach of Sauter, of Heisenberg and Euler and of Schwinger, the process of vacuum polarization in the field of a ''bare'' Kerr-- Newman geometry is studied. The value of theExpand
...
1
2
3
4
5
...