Radial and vertical epicyclic frequencies of Keplerian motion in the field of Kerr naked ...

@article{41408,
   author = {Török, Gabriel and Stuchlík, Zdeněk},
   article_location = {LES ULIS CEDEX A},
   article_number = {3},
   doi = {http://dx.doi.org/10.1051/0004-6361:20052825},
   keywords = {black holes physics; X-rays : general},
   language = {eng},
   issn = {0004-6361},
   journal = {ASTRONOMY & ASTROPHYSICS},
   title = {Radial and vertical epicyclic frequencies of Keplerian motion in the field of Kerr naked singularities - Comparison with the black hole case and possible instability of naked-singularity accretion discs},
   volume = {437},
   year = {2005}
}

TY  - JOUR
ID  - 41408
AU  - Török, Gabriel - Stuchlík, Zdeněk
PY  - 2005
TI  - Radial and vertical epicyclic frequencies of Keplerian motion in the field of Kerr naked singularities - Comparison with the black hole case and possible instability of naked-singularity accretion discs
JF  - ASTRONOMY & ASTROPHYSICS
VL  - 437
IS  - 3
SP  - 775-788
EP  - 775-788
PB  - EDP SCIENCES S A
SN  - 00046361
KW  - black holes physics
KW  - X-rays : general
N2  - Relativistic Keplerian orbital frequency (v(K)) and related epicyclic frequencies (radial v(r), vertical v(theta)) play an important role in the physics of accretion discs orbiting Kerr black holes - quasiperiodic oscillations observed in microquasars can be explained by associated resonant or trapping effects. Because of growing theoretical evidence of the possible existence of naked singularities, we discuss the behaviour of the fundamenal orbital frequencies for Keplerian motion in the field of Kerr naked singularities, primarily in order to find phenomena that could observationally distinguish a hypothetical naked singularity from black holes. Some astrophysically important consequences are sketched, namely the existence of strong resonant frequency for all Kerr naked singularities, with radial and vertical epicyclic frequencies equal and given by the relation omega(sr) = a(-2) root a(2)-1 (a(2) + 1)-(1).
ER  - 

TÖRÖK, Gabriel a Zdeněk STUCHLÍK. Radial and vertical epicyclic frequencies of Keplerian motion in the field of Kerr naked singularities - Comparison with the black hole case and possible instability of naked-singularity accretion discs. \textit{ASTRONOMY \&{}amp; ASTROPHYSICS}. LES ULIS CEDEX A: EDP SCIENCES S A, 2005, roč.~437, č.~3, s.~775-788. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361:20052825.