Perfect fluid tori orbiting Kehagias-Sfetsos naked
singularities

J 2015

Perfect fluid tori orbiting Kehagias-Sfetsos naked singularities

KUČÁKOVÁ, Hana, Daniela PUGLIESE, Jan SCHEE and Zdeněk STUCHLÍK

Basic information

Original name

Perfect fluid tori orbiting Kehagias-Sfetsos naked singularities

Authors

KUČÁKOVÁ, Hana, Daniela PUGLIESE, Jan SCHEE and Zdeněk STUCHLÍK

Edition

The European Physical Journal C, US - Spojené státy americké, 2015, 1434-6044

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

www

Organization unit

Faculty of Philosophy and Science in Opava

DOI

http://dx.doi.org/10.1140/epjc/s10052-015-3663-7

UT WoS

000361822200004

Keywords in English

naked singularity; accretion; perfect fluid tori

Links

GB14-37086G, research and development project.

Změněno: 27/1/2021 10:29, Mgr. Pavlína Jalůvková

Abstract

V originále

We construct perfect fluid tori in the field of the Kehagias-Sfetsos (K-S) naked singularities. These are spherically symmetric vacuum solutions of the modified Horava quantum gravity, characterized by a dimensionless parameter omega M^2, combining the gravitational mass parameter M of the spacetime with the Horava parameter., reflecting the role of the quantum corrections. In dependence on the value of omega M^2, the K-S naked singularities demonstrate a variety of qualitatively different behavior of their circular geodesics that is fully reflected in the properties of the toroidal structures, demonstrating clear distinction to the properties of the torii in the Schwarzschild spacetimes. In all of the K-S naked singularity spacetimes the tori are located above an "antigravity" sphere where matter can stay in a stable equilibrium position, which is relevant for the stability of the orbiting fluid toroidal accretion structures. The signature of the K-S naked singularity is given by the

Citovat

KUČÁKOVÁ, Hana, Daniela PUGLIESE, Jan SCHEE and Zdeněk STUCHLÍK. Perfect fluid tori orbiting Kehagias-Sfetsos naked singularities. The European Physical Journal C. US - Spojené státy americké, 2015, vol. 75, No 9, p. "451-1"-"451-31", 31 pp. ISSN 1434-6044. Available from: https://dx.doi.org/10.1140/epjc/s10052-015-3663-7.

@article{46123,
   author = {Kučáková, Hana and Pugliese, Daniela and Schee, Jan and Stuchlík, Zdeněk},
   article_location = {US - Spojené státy americké},
   article_number = {9},
   doi = {http://dx.doi.org/10.1140/epjc/s10052-015-3663-7},
   keywords = {naked singularity; accretion; perfect fluid tori},
   language = {eng},
   issn = {1434-6044},
   journal = {The European Physical Journal C},
   title = {Perfect fluid tori orbiting Kehagias-Sfetsos naked singularities},
   url = {https://link.springer.com/article/10.1140/epjc/s10052-015-3663-7},
   volume = {75},
   year = {2015}
}

TY  - JOUR
ID  - 46123
AU  - Kučáková, Hana - Pugliese, Daniela - Schee, Jan - Stuchlík, Zdeněk
PY  - 2015
TI  - Perfect fluid tori orbiting Kehagias-Sfetsos naked singularities
JF  - The European Physical Journal C
VL  - 75
IS  - 9
SP  - "451-1"-"451-31"
EP  - "451-1"-"451-31"
SN  - 14346044
KW  - naked singularity
KW  - accretion
KW  - perfect fluid tori
UR  - https://link.springer.com/article/10.1140/epjc/s10052-015-3663-7
N2  - We construct perfect fluid tori in the field of the Kehagias-Sfetsos (K-S) naked singularities. These are spherically symmetric vacuum solutions of the modified Horava quantum gravity, characterized by a dimensionless parameter omega M^2, combining the gravitational mass parameter M of the spacetime with the Horava parameter., reflecting the role of the quantum corrections. In dependence on the value of omega M^2, the K-S naked singularities demonstrate a variety of qualitatively different behavior of their circular geodesics that is fully reflected in the properties of the toroidal structures, demonstrating clear distinction to the properties of the torii in the Schwarzschild spacetimes. In all of the K-S naked singularity spacetimes the tori are located above an "antigravity" sphere where matter can stay in a stable equilibrium position, which is relevant for the stability of the orbiting fluid toroidal accretion structures. The signature of the K-S naked singularity is given by the
ER  -

KUČÁKOVÁ, Hana, Daniela PUGLIESE, Jan SCHEE and Zdeněk STUCHLÍK. Perfect fluid tori orbiting Kehagias-Sfetsos naked singularities. \textit{The European Physical Journal C}. US - Spojené státy americké, 2015, vol.~75, No~9, p.~''451-1''-''451-31'', 31 pp. ISSN~1434-6044. Available from: https://dx.doi.org/10.1140/epjc/s10052-015-3663-7.

Detailed Information on Publication Record