5 papers
Effect of the spherical Earth on a simple pendulum
Lior M. Burko
We consider the period of a simple pendulum in the gravitational field of the spherical Earth. Effectively, gravity is enhanced compared with the often used flat Earth approximatio…
Interaction of electromagnetic perturbations with infalling observers inside spherical charged black holes
Lior M. Burko
The electromagnetic radiation that falls into a Reissner-Nordström black hole is known to develop a ``blue sheet'', namely, an infinite concentration of energy density at the Cauch…
Homogeneous spacelike singularities inside spherical black holes
Lior M. Burko
Recent numerical simulations have found that the Cauchy horizon inside spherical charged black holes, when perturbed nonlinearly by a self-gravitating, minimally-coupled, massless,…
Structure of the Cauchy horizon singularity
Lior M. Burko
We study the Cauchy horizon (CH) singularity of a spherical charged black hole perturbed nonlinearly by a self-gravitating massless scalar field. We show numerically that the singu…
Free evolution of nonlinear scalar field collapse in double-null coordinates
Lior M. Burko
We study numerically the fully nonlinear spherically-symmetric collapse of a self-gravitating, minimally-coupled, massless scalar field. Our numerical code is based on double-null…