399 citations
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ205 papers
- Universidade Federal do ABCBR61 papers
- Czech Academy of Sciences, Astronomical InstituteCZ57 papers
- Nicolaus Copernicus Astronomical CenterPL55 papers
- Czech Technical University in PragueCZ40 papers
- University of GothenburgSE38 papers
- Peoples' Friendship University of RussiaRU36 papers
- Ulugh Beg Astronomical InstituteUZ34 papers
- Polish Academy of SciencesPL30 papers
- Centre National de la Recherche ScientifiqueFR27 papers
- Charles UniversityCZ27 papers
- Joint Institute for Nuclear ResearchRU26 papers
22 papers · 1 filter
Non-geodesic orbital and epicyclic frequencies in vicinity of slowly rotating magnetized neutron stars
Pavel Bakala, Martin Urbanec, Eva Sramkova +2
We study non-geodesic corrections to the quasicircular motion of charged test particles in the field of magnetized slowly rotating neutron stars. The gravitational field is approxi…
Restrictions to neutron star properties based on twin-peak quasi-periodic oscillations
Gabriel Torok, Pavel Bakala, Eva Sramkova +3
We consider twin-peak quasi-periodic oscillations observed in the accreting low-mass neutron star binaries and explore restrictions to central compact object properties that are im…
Resonant switch model of twin peak HF QPOs applied to the atoll source 4U 1636-53
Zdenek Stuchlik, Andrea Kotrlova, Gabriel Torok
We present a Resonant Switch (RS) model of twin peak high-frequency quasi-periodic oscillations (HF QPOs), assuming switch of twin oscillations at a resonant point, where frequenci…
Multi-resonance orbital model of HF QPOs
Zdenek Stuchlik, Andrea Kotrlova, Gabriel Torok
Using known frequencies of the twin peak high-frequency quasiperiodic oscillations (HF QPOs) and known mass M of the central black hole, the black-hole dimensionless spin a can be…
Confronting the models of 3:2 QPOs with the evidence of near extreme Kerr black hole
Andrea Kotrlova, Gabriel Torok, Eva Sramkova +1
The black hole mass and spin estimates assuming various specific models of the 3:2 high frequency quasi-periodic oscillations (HF QPOs) have been carried out in Torok et al. (2005,…
Lagrangian and Hamiltonian Structures for the Constant Astigmatism Equation
Maxim V. Pavlov, Sergej A. Zykov
In this paper we found a Lagrangian representation and corresponding Hamiltonian structure for the constant astigmatism equation. Utilizing this Hamiltonian structure and extra con…