5 papers
Charges and Magnetic Fields of the Slowly-rotating Neutron Stars
Hongsu Kim, Hyung Mok Lee, Chul H. Lee +1
In association with the Goldreich-Julian's magnetic braking mechanism to explain the luminosity of radio pulsars as a result of their spin-down, it is of some interest to explore h…
Evolution of a Rotating Black Hole with a Magnetized Accretion Disk
Hyun Kyu Lee, Hui-Kyung Kim
The effect of an accretion disk on the Blandford-Znajek process and the evolution of a black hole are discussed using a simplified system for the black hole - accretion disk in whi…
Blandford-Znajek process as a gamma ray burst central engine
Hyun Kyu Lee, R. A. M. J. Wijers, G. E. Brown
We investigate the possibility that gamma-ray bursts are powered by a central engine consisting of a black hole with an external magnetic field supported by a surrounding disk or t…
Electron-Neutrino Degeneracy and Primordial Nucleosynthesis
Jong Bock Kim, Joon Ha Kim, Hyun Kyu Lee
We discuss the possible ranges of electron neutrino degeneracy which is consistent with the inferred primordial abundances of the light elements. It is found that the electron neut…
Rotation Symmetry and Nonabelian Berry Potential
Hyun Kyu Lee, Mannque Rho
We study the role of rotational symmetry in the systems where nonabelian Berry potentials emerge as a result of integrating out fast degrees of freedom. The conserved angular momen…