Optical effects related to Keplerian discs orbiting Kehagias-Sfetsos naked singularities

@article{46043,
   author = {Schee, Jan and Stuchlík, Zdeněk},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {19},
   doi = {http://dx.doi.org/10.1088/0264-9381/31/19/195013},
   keywords = {Hořava gravity; optical phenomena; Keplerian disc},
   language = {eng},
   issn = {0264-9381},
   journal = {Classical and Quantum Gravity},
   title = {Optical effects related to Keplerian discs orbiting Kehagias-Sfetsos naked singularities},
   url = {https://iopscience.iop.org/article/10.1088/0264-9381/31/19/195013},
   volume = {31},
   year = {2014}
}

TY  - JOUR
ID  - 46043
AU  - Schee, Jan - Stuchlík, Zdeněk
PY  - 2014
TI  - Optical effects related to Keplerian discs orbiting Kehagias-Sfetsos naked singularities
JF  - Classical and Quantum Gravity
VL  - 31
IS  - 19
SP  - "195013 - 1"-"195013 - 50"
EP  - "195013 - 1"-"195013 - 50"
SN  - 02649381
KW  - Hořava gravity
KW  - optical phenomena
KW  - Keplerian disc
UR  - https://iopscience.iop.org/article/10.1088/0264-9381/31/19/195013
N2  - We demonstrate possible optical signatures of the Kehagias-Sfetsos (KS) naked singularity spacetimes representing a spherically symmetric vacuum solution of the modified Horava gravity. In such spacetimes, accretion structures significantly different from those present in standard black hole spacetimes occur due to the 'antigravity' effect, which causes an internal static sphere surrounded by Keplerian discs. We focus our attention on the optical effects related to the Keplerian accretion discs, constructing the optical appearance of the Keplerian discs, the spectral continuum due to their thermal radiation, and the spectral profiled lines generated in the innermost parts of such discs. The KS naked singularity signature is strongly encoded in the characteristics of predicted optical effects, especially in cases where the spectral continuum and spectral lines are profiled by the strong gravity of the spacetimes due to the vanishing region of the angular velocity gradient influencing th
ER  - 

SCHEE, Jan and Zdeněk STUCHLÍK. Optical effects related to Keplerian discs orbiting Kehagias-Sfetsos naked singularities. \textit{Classical and Quantum Gravity}. GB - Spojené království Velké Británie a, 2014, vol.~31, No~19, p.~''195013 - 1''-''195013 - 50'', 50 pp. ISSN~0264-9381. Available from: https://dx.doi.org/10.1088/0264-9381/31/19/195013.