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@article{45001,
author = {Schee, Jan and Stuchlík, Zdeněk},
article_location = {GB - Spojené království Velké Británie a},
article_number = {21},
doi = {http://dx.doi.org/10.1088/0264-9381/27/21/215017},
keywords = {NONZERO COSMOLOGICAL CONSTANT, QUASI-PERIODIC OSCILLATIONS, BLACK-HOLE SPIN, HIGH-FREQUENCY QPOS, NAKED-SINGULARITY, GRAVITATIONAL COLLAPSE, ACCRETION DISK, COSMIC CENSORSHIP, RESONANCE MODEL, NULL GEODESICS},
language = {eng},
issn = {0264-9381},
journal = {Classical and Quantum Gravity},
title = {Appearance of Keplerian discs orbiting Kerr superspinars},
volume = {27},
year = {2010}
}
TY - JOUR
ID - 45001
AU - Schee, Jan - Stuchlík, Zdeněk
PY - 2010
TI - Appearance of Keplerian discs orbiting Kerr superspinars
JF - Classical and Quantum Gravity
VL - 27
IS - 21
SN - 02649381
KW - NONZERO COSMOLOGICAL CONSTANT, QUASI-PERIODIC OSCILLATIONS, BLACK-HOLE SPIN, HIGH-FREQUENCY QPOS, NAKED-SINGULARITY, GRAVITATIONAL COLLAPSE, ACCRETION DISK, COSMIC CENSORSHIP, RESONANCE MODEL, NULL GEODESICS
N2 - We study optical phenomena related to the appearance of Keplerian accretion discs orbiting Kerr superspinars predicted by string theory. The superspinar exterior is described by standard Kerr naked singularity geometry breaking the black hole limit on the internal angular momentum (spin). We construct local photon escape cones for a variety of orbiting sources that enable us to determine the superspinars silhouette in the case of distant observers. We show that the superspinar silhouette depends strongly on the assumed edge where the external Kerr spacetime is joined to the internal spacetime governed by string theory and significantly differs from the black hole silhouette. The appearance of the accretion disc is strongly dependent on the value of thesuperspinar spin in both their shape and frequency shift profile.
ER -
SCHEE, Jan and Zdeněk STUCHLÍK. Appearance of Keplerian discs orbiting Kerr superspinars. \textit{Classical and Quantum Gravity}. GB - Spojené království Velké Británie a, 2010, vol.~27, No~21, 39 pp. ISSN~0264-9381. Available from: https://dx.doi.org/10.1088/0264-9381/27/21/215017.
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