GOLUCHOVÁ, Kateřina, Andrea KOTRLOVÁ, Zdeněk STUCHLÍK, Gabriel TÖRÖK and Martin URBANEC. Resonant switch model of HF QPOs and equations of state of neutron stars nad quark stars. Acta Polytechnica. CZ - Česká republika: Acta Polytechnica, 2014, vol. 54, No 5, p. 363-366. ISSN 1210-2709. Available from: https://dx.doi.org/10.14311/AP.2014.54.0363.
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Basic information
Original name Resonant switch model of HF QPOs and equations of state of neutron stars nad quark stars
Authors GOLUCHOVÁ, Kateřina, Andrea KOTRLOVÁ, Zdeněk STUCHLÍK, Gabriel TÖRÖK and Martin URBANEC.
Edition Acta Polytechnica, CZ - Česká republika, Acta Polytechnica, 2014, 1210-2709.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
WWW URL
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.14311/AP.2014.54.0363
Keywords in English neutron stars; X-ray variability; observations
Tags EE2-3-20-0071, , GA202-090772
Tags International impact
Links EE2.3.20.0071, research and development project. GA202/09/0772, research and development project.
Changed by Changed by: Jan Vlha, učo 48995. Changed: 27/4/2021 09:43.
Abstract
The mass and spin estimates of the 4U 1636-53 neutron star obtained by the Resonant Switch (RS) model of high-frequency quasi-periodic oscillations (HF QPOs) are tested by a large variety of equations of state (EoS) governing the structure of neutron stars. Neutron star models are constructed under the Hartle?Thorne theory of slowly rotating neutron stars calculated using the observationally given rotational frequency f_{rot} = 580 Hz (or alternatively f_{rot} = 290 Hz) of the neutron star at 4U 1636-53. It is demonstrated that only two variants of the RS model are compatible with the parameters obtained by modelling neutron stars for the rotational frequency f_{rot} = 580 Hz. The variant giving the best fit with parameters M similar to 2.20 M_{Sun} and a similar to 0.27 agrees with high precision with the prediction of one of the Skyrme EoS. The variant giving the second best fit with parameters M similar to 2.12 M_{Sun} and a similar to 0.20 agrees with lower precision with the predi
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