Observational phenomena related to primordial Kerr superspinars

@article{45200,
   author = {Schee, Jan and Stuchlík, Zdeněk},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {6},
   doi = {http://dx.doi.org/10.1088/0264-9381/29/6/065002},
   keywords = {Quasi-periodic oscillations; Black-hole spin; X-ray binaries; Relativistic accretion disks},
   language = {eng},
   issn = {0264-9381},
   journal = {Classical and Quantum Gravity},
   title = {Observational phenomena related to primordial Kerr superspinars},
   url = {https://iopscience.iop.org/article/10.1088/0264-9381/29/6/065002/pdf},
   volume = {29},
   year = {2012}
}

TY  - JOUR
ID  - 45200
AU  - Schee, Jan - Stuchlík, Zdeněk
PY  - 2012
TI  - Observational phenomena related to primordial Kerr superspinars
JF  - Classical and Quantum Gravity
VL  - 29
IS  - 6
SN  - 02649381
KW  - Quasi-periodic oscillations
KW  - Black-hole spin
KW  - X-ray binaries
KW  - Relativistic accretion disks
UR  - https://iopscience.iop.org/article/10.1088/0264-9381/29/6/065002/pdf
N2  - String theory indicates the existence of primordial Kerr superspinars, extremely compact objects with exterior described by the Kerr naked-singularity geometry. The primordial superspinars have to be converted to a black hole due to accretion, but they could survive to the era of high-redshift quasars. We discuss observational phenomena caused by the primordial Kerr superspinars in this era, considering the properties of corotating Keplerian accretion discs orbiting such superspinars and the optical phenomena modified by their presence. The potential well around a near-extreme superspinar with spin a very close to the extreme black hole value a = 1 is very deep so that the efficiency of the accretion process reaches 157.7%, influencing thus significantly the spectral continuum of corotating Keplerian discs and giving a signature of near-extreme superspinars. Such superspinars can also serve as an efficient accelerator for extremely high-energy collisions. Phenomena enabling a clear dis
ER  - 

SCHEE, Jan a Zdeněk STUCHLÍK. Observational phenomena related to primordial Kerr superspinars. \textit{Classical and Quantum Gravity}. GB - Spojené království Velké Británie a, 2012, roč.~29, č.~6, 27 s. ISSN~0264-9381. Dostupné z: https://dx.doi.org/10.1088/0264-9381/29/6/065002.