2017/12/02 by Inyong Cho, Cho, Inyong
Earth and Planetary Sciences · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Geophysics and Gravity Measurements #High Energy Physics - Theory (hep-th)
paper · pdf · doi:10.48550/arxiv.1712.00577
openalex publication_date 2017/12/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the gravitational field of static perfect-fluid in the presence of electric field. We adopt the equation of state p(r)=-ρ(r)/3 for the fluid in order to consider the closed (S3) or the open (H3) background spatial topology. Depending on the scales of the mass, spatial-curvature and charge parameters (K, R0, Q), there are several types of solutions in S3 and H3 classes. Out of them, the most interesting solution is the Reisner-Norström type of black hole. Due to the electric field, there are two horizons in the geometry. There exists a curvature singularity inside the inner horizon as usual. In addition, there exists a naked singularity at the antipodal point in S3 outside the outer horizon due to the fluid. Both of the singularities can be accessed only by radial null rays.