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.

Základní údaje

Originální název

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

Autoři

GOLUCHOVÁ, Kateřina, Andrea KOTRLOVÁ, Zdeněk STUCHLÍK, Gabriel TÖRÖK a Martin URBANEC

Vydání

Acta Polytechnica, CZ - Česká republika, Acta Polytechnica, 2014, 1210-2709

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Organizační jednotka

Filozoficko-přírodovědecká fakulta v Opavě

DOI

http://dx.doi.org/10.14311/AP.2014.54.0363

Klíčová slova anglicky

neutron stars; X-ray variability; observations

Štítky

EE2-3-20-0071, FÚ, GA202-090772

Příznaky

Mezinárodní význam

Návaznosti

EE2.3.20.0071, projekt VaV. GA202/09/0772, projekt VaV.

Změněno: 27. 4. 2021 09:43, Jan Vlha

Anotace

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 a 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, roč. 54, č. 5, s. 363-366. ISSN 1210-2709. Dostupné z: 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 a 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, roč.~54, č.~5, s.~363-366. ISSN~1210-2709. Dostupné z: https://dx.doi.org/10.14311/AP.2014.54.0363.

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