Resonant switch model of HF QPOs and equations of state of
neutron stars nad quark stars

J 2014

Resonant switch model of HF QPOs and equations of state of neutron stars nad quark stars

GOLUCHOVÁ, Kateřina, Andrea KOTRLOVÁ, Zdeněk STUCHLÍK, Gabriel TÖRÖK, Martin URBANEC et. al.

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

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

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

Links

EE2.3.20.0071, research and development project. GA202/09/0772, research and development project.

Změněno: 27/4/2021 09:43, Jan Vlha

Abstract

V originále

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

Citovat

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.

@article{42727,
   author = {Goluchová, Kateřina and Kotrlová, Andrea and Stuchlík, Zdeněk and Török, Gabriel and Urbanec, Martin},
   article_location = {CZ - Česká republika},
   article_number = {5},
   doi = {http://dx.doi.org/10.14311/AP.2014.54.0363},
   keywords = {neutron stars; X-ray variability; observations},
   language = {eng},
   issn = {1210-2709},
   journal = {Acta Polytechnica},
   title = {Resonant switch model of HF QPOs and equations of state of neutron stars nad quark stars},
   url = {https://ojs.cvut.cz/ojs/index.php/ap/article/view/2289},
   volume = {54},
   year = {2014}
}

TY  - JOUR
ID  - 42727
AU  - Goluchová, Kateřina - Kotrlová, Andrea - Stuchlík, Zdeněk - Török, Gabriel - Urbanec, Martin
PY  - 2014
TI  - Resonant switch model of HF QPOs and equations of state of neutron stars nad quark stars
JF  - Acta Polytechnica
VL  - 54
IS  - 5
SP  - 363-366
EP  - 363-366
PB  - Acta Polytechnica
SN  - 12102709
KW  - neutron stars
KW  - X-ray variability
KW  - observations
UR  - https://ojs.cvut.cz/ojs/index.php/ap/article/view/2289
N2  - 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
ER  -

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. \textit{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.

Detailed Information on Publication Record