Circular geodesics of naked singularities in the Kehagias-Sfetsos metric of Hořava?s gravity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F14%3A%230005069" target="_blank" >RIV/47813059:19240/14:#0005069 - isvavai.cz</a>
Result on the web
<a href="http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.024035" target="_blank" >http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.024035</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.90.024035" target="_blank" >10.1103/PhysRevD.90.024035</a>
Alternative languages
Result language
angličtina
Original language name
Circular geodesics of naked singularities in the Kehagias-Sfetsos metric of Hořava?s gravity
Original language description
We discuss photon and test-particle orbits in the Kehagias-Sfetsos (KS) metric of Hořava?s gravity. For any value of the Hořava parameter omega, there are values of the gravitational mass M for which the metric describes a naked singularity, and this isalways accompanied by a vacuum ?antigravity sphere? on whose surface a test particle can remain at rest (in a zero angular momentum geodesic), and inside which no circular geodesics exist. The observational appearance of an accreting KS naked singularity in a binary system would be that of a quasistatic spherical fluid shell surrounded by an accretion disk, whose properties depend on the value of M, but are always very different from accretion disks familiar from the Kerr-metric solutions. The properties of the corresponding circular orbits are qualitatively similar to those of the Reissner-Nordström naked singularities. When event horizons are present, the orbits outside the Kehagias-Sfetsos black hole are qualitatively similar to tho
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
1550-7998
e-ISSN
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Volume of the periodical
90
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
"024035-1"-"024035-14"
UT code for WoS article
000339447600005
EID of the result in the Scopus database
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