output
19972026
most citedStationary Scalar Clouds Around Rotating Black Holes

244 citations

Showing 2018 · gr-qcShow all

13 papers · 2 filters

gr-qc2018★ 13 cited

The Reissner-Nordström black hole with the fastest relaxation rate

Shahar Hod

Numerous {\it numerical} investigations of the quasinormal resonant spectra of Kerr-Newman black holes have revealed the interesting fact that the characteristic relaxation times $…

gr-qc2018★ 21 cited

Analytic study of self-gravitating polytropic spheres with light rings

Shahar Hod

Ultra-compact objects describe horizonless solutions of the Einstein field equations which, like black-hole spacetimes, possess null circular geodesics (closed light rings). We stu…

gr-qc2018★ 1 cited

The Hawking paradox and the Bekenstein resolution in higher-dimensional spacetimes

Shahar Hod

The black-hole information puzzle has attracted much attention over the years from both physicists and mathematicians. One of the most intriguing suggestions to resolve the informa…

gr-qc2018★ 20 cited

Lower bound on the compactness of isotropic ultra-compact objects

Shahar Hod

Horizonless spacetimes describing spatially regular ultra-compact objects which, like black-hole spacetimes, possess closed null circular geodesics (light rings) have recently attr…

gr-qc2018★ 3 cited

Black-hole evaporation, cosmic censorship, and a quantum lower bound on the Bekenstein-Hawking temperature

Shahar Hod

The semi-classical Hawking evaporation process of Reissner-Nordström black holes is analyzed. It is shown that this quantum mechanism may turn a near-extremal black-hole spacetime…

gr-qc2018★ 1 cited

Natural broadening in the quantum emission spectra of higher-dimensional Schwarzschild black holes

Shahar Hod

Following an intriguing heuristic argument of Bekenstein, many researches have suggested during the last four decades that quantized black holes may be characterized by discrete ra…

gr-qc2018★ 15 cited

The instability spectra of near-extremal Reissner-Nordström-de Sitter black holes

Shahar Hod

The linearized dynamics of charged massive scalar fields in the near-extremal charged Reissner-Nordström-de Sitter (RNdS) black-hole spacetime is studied analytically. Interestingl…

gr-qc2018★ 6 cited

Stationary bound-state massive scalar field configurations supported by spherically symmetric compact reflecting stars

Shahar Hod

It has recently been demonstrated that asymptotically flat neutral reflecting stars are characterized by an intriguing no-hair property. In particular, it has been proved that thes…

gr-qc2018★ 32 cited

Marginally bound resonances of charged massive scalar fields in the background of a charged reflecting shell

Shahar Hod

We study {\it analytically} the characteristic resonance spectrum of charged massive scalar fields linearly coupled to a spherically symmetric charged reflecting shell. In particul…

gr-qc2018

Bekenstein, I, and the quantum of black-hole surface area

Shahar Hod

Professor Jacob Bekenstein was known not only for his brilliant and original physical ideas, but also for their clear presentation in his lectures and seminal research papers. I he…

gr-qc2018★ 25 cited

Stationary bound-state scalar configurations supported by rapidly-spinning exotic compact objects

Shahar Hod

Some quantum-gravity theories suggest that the absorbing horizon of a classical black hole should be replaced by a reflective surface which is located a microscopic distance above…

gr-qc2018★ 39 cited

Quasinormal modes and strong cosmic censorship in near-extremal Kerr-Newman-de Sitter black-hole spacetimes

Shahar Hod

The quasinormal resonant modes of massless neutral fields in near-extremal Kerr-Newman-de Sitter black-hole spacetimes are calculated in the eikonal regime. It is explicitly proved…

gr-qc2018★ 53 cited

Strong cosmic censorship in charged black-hole spacetimes: As strong as ever

Shahar Hod

It is proved that dynamically formed Reissner-Nordström-de Sitter (RNdS) black holes, which have recently been claimed to provide counter-examples to the Penrose strong cosmic cens…