Autors: Stefanov, I. Z.
Title: X-ray quasi-periodic oscillations and estimates of the mass and the spin of the neutron star in 4U 1728-34
Keywords: low mass X-ray binaries, quasi-periodic oscillations, neutron stars,

Abstract: Three of the averaged light curves from the X-ray spectrum of the neutron star binary 4U 1728-34 contain triads of quasi-periodic oscillations – two kHz, an upper and a lower one, and one low-frequency. In the present work, with the assumption that the triads occur simultaneously and with the application of the relativistic precession model the mass and the spin of the neutron star in the atoll source 4U 1728-34 is obtained. The consistency of the three independent estimates of the mass and the spin is also tested. According to the obtained results, the studied neutron star has relatively high mass and moderate spin.

References

    Issue

    “Dni na fizikata v Tehnicheski universitet – Sofia”, 28-30 May 2020, pp. 68, 2020, Bulgaria, ИЗДАТЕЛСТВО НА ТЕХНИЧЕСКИ УНИВЕРСИТЕТ – СОФИЯ, ISSN 1313-9576

    Copyright ИЗДАТЕЛСТВО НА ТЕХНИЧЕСКИ УНИВЕРСИТЕТ – СОФИЯ

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