Výsledky vyhledávání - "Tasheva, Radostina P."

Report

Geodesic model complience with the frequencies of the observed X-ray quasi-period oscillations of XTE J1807-294

Autor: Tasheva, Radostina, Stefanov, Ivan

Publikováno v: Bulgarian Astronomical Journal, Vol. 34, p. 103 (2021)

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 its main parameters - mass and angular momentum. Seven different geod

Externí odkaz: http://arxiv.org/abs/2305.12198

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Mass Evaluation of The Microquasar XTE J1807-294 by Means of the Relativistic Precession Model

Autor: Tasheva, Radostina P., Stefanov, Ivan Zh.

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 precession (RP) model an attempt is made to approximate the observed frequen

Externí odkaz: http://arxiv.org/abs/1811.05223

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On the selection of models for the high-frequency quasiperiodic oscillations of black holes: The mass problem

Autor: Stefanov, Ivan Zh., Tasheva, Radostina P.

Publikováno v: Rom. Rep. Phys. 74, 105 (2022)

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 black hole, if an adequate model for them was available. There are se

Externí odkaz: http://arxiv.org/abs/1711.11398

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