199 citations · 631 across the 22 of their papers we have counts for
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Chi-square test of the relativistic precession model through the neutron star IGR J17511-3057
Ivan Z. Stefanov
The aim of the current paper is to apply the method of Bambi (Bambi, 2015) to a source which contains two or more simultaneous triads of variability components. The joint chi-squar…
Geodesic model complience with the frequencies of the observed X-ray quasi-period oscillations of XTE J1807-294
Radostina Tasheva, Ivan Stefanov
The investigation of the data for quasi-periodic pulsations observed in the X-ray spectra of the accreting millisecond pulsar XTEJ 1807-294 allows some conclusions to be made about…
Mass Evaluation of The Microquasar XTE J1807-294 by Means of the Relativistic Precession Model
Radostina P. Tasheva, Ivan Zh. Stefanov
The high frequency quasiperiodic oscillations (QPOs) in the X-ray spectra of the millisecond pulsar XTE J1807-294 are under consideration. By application of the relativistic preces…
On the selection of models for the high-frequency quasiperiodic oscillations of black holes: The mass problem
Ivan Zh. Stefanov, Radostina P. Tasheva
High-frequency quasiperiodic oscillations of the X-ray flux comming from black-hole binaries have the potential to provide precise estimates of the mass and the spin of the central…
Application of the relativistic precession model to the accreting millisecond X-ray pulsar IGR J17511-3057
Ivan Zh. Stefanov
The observation of a pair of simultaneous twin kHz QPOs in the power density spectrum of a neutron star or a black hole allows its mass-angular-momentum relation to be constrained.…
Confronting models for the high-frequency QPOs with Lense-Thirring precession
Ivan Zh. Stefanov
Quasiperiodic oscillations (QPOs) have been observed in the power-density spectra of some low-mass X-ray binaries(LMXB) containing a black hole. The two major groups of QPOs -- low…