Other formats:
BibTeX
LaTeX
RIS
@article{43243,
author = {Hledík, Stanislav and Stuchlík, Zdeněk and Truparová Plšková, Kamila},
article_location = {GB - Spojené království Velké Británie a},
article_number = {15},
doi = {http://dx.doi.org/10.1088/0264-9381/28/15/155017},
keywords = {SUPERMASSIVE BLACK-HOLES, QUASI-PERIODIC OSCILLATIONS, ORBITAL RESONANCE MODEL, HIGH-FREQUENCY QPOS, NAKED-SINGULARITY, IRON LINE, COSMOLOGICAL CONSTANT, ENERGY EXTRACTION, MOLECULAR GAS, ALPHA LINES},
language = {eng},
issn = {0264-9381},
journal = {Classical and Quantum Gravity},
title = {Evolution of Kerr superspinars due to accretion counterrotating thin discs},
volume = {28},
year = {2011}
}
TY - JOUR
ID - 43243
AU - Hledík, Stanislav - Stuchlík, Zdeněk - Truparová Plšková, Kamila
PY - 2011
TI - Evolution of Kerr superspinars due to accretion counterrotating thin discs
JF - Classical and Quantum Gravity
VL - 28
IS - 15
SP - 1-23
EP - 1-23
SN - 02649381
KW - SUPERMASSIVE BLACK-HOLES, QUASI-PERIODIC OSCILLATIONS, ORBITAL RESONANCE MODEL, HIGH-FREQUENCY QPOS, NAKED-SINGULARITY, IRON LINE, COSMOLOGICAL CONSTANT, ENERGY EXTRACTION, MOLECULAR GAS, ALPHA LINES
N2 - String theory predicts the existence of extremely compact objects spinning faster than Kerr black holes. The spacetime exterior to such superspinars is described by Kerr naked singularity geometry breaking the black-hole limit on the internal angular momentum. We demonstrate that the conversion of Kerr superspinars into a near-extreme black hole due to an accretion counterrotating Keplerian disc is much more effective in comparison with the case of a corotating one since both the accreted rest mass necessary for conversion and the evolution time of conversion are by orders smaller for counterrotating discs. The conversion time of Kerr superspinars is given for several accretion regimes, and it is shown that the self-regulated accretion flow implies fastest evolution to the black-hole state. In the final stages of the conversion, Kerr superspinars can serve as very efficient particle accelerators in the region where the black-hole horizon forms.
ER -
HLEDÍK, Stanislav, Zdeněk STUCHLÍK and Kamila TRUPAROVÁ PLŠKOVÁ. Evolution of Kerr superspinars due to accretion counterrotating thin discs. \textit{Classical and Quantum Gravity}. GB - Spojené království Velké Británie a, 2011, vol.~28, No~15, p.~1-23. ISSN~0264-9381. Available from: https://dx.doi.org/10.1088/0264-9381/28/15/155017.
|
