Two-fluid plasma;
Alfven and high frequency electromagnetic waves;
Black hole horizon;
Cosmological constant;
PROBE WMAP OBSERVATIONS;
HIGH-REDSHIFT SUPERNOVAE;
HUBBLE-SPACE-TELESCOPE;
2 FLUID PLASMAS;
ACCELERATING UNIVERSE;
COSMOLOGICAL CONSTANT;
POWER SPECTRUM;
MASS;
ELECTRODYNAMICS;
DECELERATION;
D O I:
10.1007/s10773-009-9946-8
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
We investigate transverse electromagnetic waves propagating in a plasma influenced by the gravitational field of the Schwarzschild-de Sitter black hole. Applying 3+1 spacetime split we derive the relativistic two-fluid equations to take account of gravitational effects due to the event horizon and describe the set of simultaneous linear equations for the perturbations. We use a local approximation to investigate the one-dimensional radial propagation of Alfv,n and high frequency electromagnetic waves. We derive the dispersion relation for these waves and solve it for the wave number k numerically.