ABRAMOWICZ, Marek, Włodek KLUŹNIAK, Jan SCHEE, Zdeněk STUCHLÍK a Ronaldo Savioli Sumé VIEIRA. Circular geodesics of naked singularities in the Kehagias-Sfetsos metric of Hořava?s gravity. Physical Review D. US - Spojené státy americké, 2014, roč. 90, č. 2, s. "024035-1"-"024035-14", 14 s. ISSN 1550-7998. Dostupné z: https://dx.doi.org/10.1103/PhysRevD.90.024035. |
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@article{43082, author = {Abramowicz, Marek and Kluźniak, Włodek and Schee, Jan and Stuchlík, Zdeněk and Vieira, Ronaldo Savioli Sumé}, article_location = {US - Spojené státy americké}, article_number = {2}, doi = {http://dx.doi.org/10.1103/PhysRevD.90.024035}, keywords = {Hořava's gravity}, language = {eng}, issn = {1550-7998}, journal = {Physical Review D}, title = {Circular geodesics of naked singularities in the Kehagias-Sfetsos metric of Hořava?s gravity}, url = {http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.024035}, volume = {90}, year = {2014} }
TY - JOUR ID - 43082 AU - Abramowicz, Marek - Kluźniak, Włodek - Schee, Jan - Stuchlík, Zdeněk - Vieira, Ronaldo Savioli Sumé PY - 2014 TI - Circular geodesics of naked singularities in the Kehagias-Sfetsos metric of Hořava?s gravity JF - Physical Review D VL - 90 IS - 2 SP - "024035-1"-"024035-14" EP - "024035-1"-"024035-14" SN - 15507998 KW - Hořava's gravity UR - http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.024035 N2 - 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 ER -
ABRAMOWICZ, Marek, Włodek KLU$\backslash$'ZNIAK, Jan SCHEE, Zdeněk STUCHLÍK a Ronaldo Savioli Sumé VIEIRA. Circular geodesics of naked singularities in the Kehagias-Sfetsos metric of Hořava?s gravity. \textit{Physical Review D}. US - Spojené státy americké, 2014, roč.~90, č.~2, s.~''024035-1''-''024035-14'', 14 s. ISSN~1550-7998. Dostupné z: https://dx.doi.org/10.1103/PhysRevD.90.024035.
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