J 2012

Resonant switch model of twin peak HF QPOs applied to the source 4U 1636-53

KOTRLOVÁ, Andrea, Zdeněk STUCHLÍK and Gabriel TÖRÖK

Basic information

Original name

Resonant switch model of twin peak HF QPOs applied to the source 4U 1636-53

Authors

Edition

Acta Astronomica, PL - Polská republika, 2012, 0001-5237

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:

Organization unit

Faculty of Philosophy and Science in Opava

UT WoS

000314616700005

Keywords in English

Accretion; Accretion disks; Stars: neutron; X-rays: binaries

Tags

Tags

International impact, Reviewed

Links

GA202/09/0772, research and development project. GD205/09/H033, research and development project.
Změněno: 7/4/2021 08:01, Mgr. Pavlína Jalůvková

Abstract

V originále

Resonant Switch (RS) model of twin peak high-frequency quasi-periodic oscillations (HF QPOs) assumes switch of twin oscillations at a resonant point where frequencies of the upper and lower oscillations VU and V L become commensurable and the twin oscillations change from one pair of the oscillating modes (corresponding to a specific model of HF QPOs) to some other pair due to nonlinear resonant phenomena. The RS model is used to determine range of allowed values of spin a and mass M of the neutron starlocated in the atoll source 4U 1636-53 where two resonant points are observed at frequency ratios VU: VL = 3:2,5:4. We consider the standard specific models of the twin oscillations based on the orbital and epicyclic geodetical frequencies. The resonantpoints are determined by the energy switch effect exhibited by the vanishing of the amplitude difference of the upper and lower oscillations. The predicted ranges of the neutron star parameters are strongly dependent on the twin modes ap