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Restrictions to neutron star models based on twin-peak quasi-periodic oscillations

Published online by Cambridge University Press:  20 March 2013

Gabriel Török ,
Martin Urbanec ,
Kateřina Goluchová ,
Pavel Bakala ,
Eva Šrámková  and
Zdeněk Stuchlík
Gabriel Török
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-74601 Opava, Czech Republic email: gabriel.torok@gmail.com
Martin Urbanec
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-74601 Opava, Czech Republic email: gabriel.torok@gmail.com
Kateřina Goluchová
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-74601 Opava, Czech Republic email: gabriel.torok@gmail.com
Pavel Bakala
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-74601 Opava, Czech Republic email: gabriel.torok@gmail.com
Eva Šrámková
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-74601 Opava, Czech Republic email: gabriel.torok@gmail.com
Zdeněk Stuchlík
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-74601 Opava, Czech Republic email: gabriel.torok@gmail.com
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Abstract

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In a series of works - Török et al. (2010, 2012a) and Urbanec et al. (2010a) - we explored restrictions to neutron star properties that are implied by various models of twin-peak quasi-periodic oscillations. Here we sketch an attempt to confront the obtained mass–angular-momentum relations and limits on neutron star compactness with the parameters estimated by assuming various equations of state and the spin frequency of the atoll source 4U 1636-53.

Keywords

X-rays: binariesstars: neutronstars: fundamental parametersstars: rotation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S291: Neutron Stars and Pulsars: Challenges and Opportunities after 80 years , August 2012 , pp. 524 - 526
Copyright
Copyright © International Astronomical Union 2013

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