SCOAP3 Repository 58 records found  1 - 10nextendSearch took 0.17 seconds. 
1. Corrigendum to “The instability spectra of near-extremal Reissner-Nordström-de Sitter black holes” [Phys. Lett. B 786 (2018) 217–222] / Hod, Shahar
We point out that the instability spectrum of the near-extremal Reissner-Nordström-de Sitter black holes discussed in Hod (2018) [1] lies outside the superradiant regime of the system..
Published in Physics letters B (2019) 10.1016/j.physletb.2018.12.024
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2. Upper bound on the energies of the emitted Hawking quanta / Hod, Shahar
Using Thorne's hoop conjecture, it is argued that the energies of the Hawking quanta emitted from canonical Schwarzschild black holes are bounded from above by the simple quantum relation E
Published in Nuclear Physics B 942 (2019) 184-187 10.1016/j.nuclphysb.2019.03.009
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3. Strong cosmic censorship in charged black-hole spacetimes: As strong as ever / Hod, Shahar
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 censorship conjecture, are characterized by unstable (singular) inner Cauchy horizons. [...]
Published in Nuclear Physics B 941 (2019) 636-645 10.1016/j.nuclphysb.2019.03.003
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4. No-go theorem for spatially regular boson stars made of static nonminimally coupled massive scalar fields / Hod, Shahar
We present a compact theorem which reveals the fact that static spatially regular massive scalar fields with nonminimal coupling to gravity cannot form spherically symmetric asymptotically flat horizonless matter configurations. [...]
Published in EPJC 79 (2019) 26 10.1140/epjc/s10052-019-6546-5
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5. On the status of the hoop conjecture in charged curved spacetimes / Hod, Shahar
The status and regime of validity of the famous Thorne hoop conjecture in spatially regular charged curved spacetimes are clarified..
Published in EPJC 78 (2018) 1013 10.1140/epjc/s10052-018-6496-3
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6. The Reissner–Nordström black hole with the fastest relaxation rate / Hod, Shahar
Numerous numerical investigations of the quasinormal resonant spectra of Kerr-Newman black holes have revealed the interesting fact that the characteristic relaxation times τ(a¯,Q¯) of these canonical black-hole spacetimes can be described by a two-dimensional function τ¯≡τ/M which increases monotonically with increasing values of the dimensionless angular-momentum parameter a¯≡J/M2 and, in addition, is characterized by a non-trivial ( non -monotonic) functional dependence on the dimensionless charge parameter Q¯≡Q/M . [...]
Published in EPJC 78 (2018) 935 10.1140/epjc/s10052-018-6422-8
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7. Lower bound on the radii of circular orbits in the extremal Kerr black-hole spacetime / Hod, Shahar
It is often stated in the physics literature that maximally-spinning Kerr black-hole spacetimes are characterized by near-horizon co-rotating circular geodesics of radius rcircular with the property rcircular→rH+ , where rH is the horizon radius of the extremal black hole. [...]
Published in EPJC 78 (2018) 725 10.1140/epjc/s10052-018-6160-y
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8. The instability spectra of near-extremal Reissner–Nordström–de Sitter black holes / Hod, Shahar
The linearized dynamics of charged massive scalar fields in the near-extremal charged Reissner–Nordström–de Sitter (RNdS) black-hole spacetime is studied analytically. [...]
Published in Physics letters B 786 (2018) 217-222 10.1016/j.physletb.2018.09.039
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9. Black-hole evaporation, cosmic censorship, and a quantum lower bound on the Bekenstein–Hawking temperature / Hod, Shahar
The semi-classical Hawking evaporation process of Reissner–Nordström black holes is analyzed. [...]
Published in EPJC 78 (2018) 634 10.1140/epjc/s10052-018-6128-y
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10. Holographic entropy bound in higher-dimensional spacetimes / Hod, Shahar
The celebrated holographic entropy bound asserts that, within the framework of a self-consistent quantum theory of gravity, the maximal entropy (information) content of a physical system is given by one quarter of its circumscribing area: SSmax=A/4P2 (here P is the Planck length). [...]
Published in Physical Review D 97 (2018) 10.1103/PhysRevD.97.126012 arXiv:1806.02804
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