J 2011

Resonant radii of kHz quasi-periodic oscillations in Keplerian discs orbiting neutron stars (Research Note)

KOTRLOVÁ, Andrea, Zdeněk STUCHLÍK and Gabriel TÖRÖK

Basic information

Original name

Resonant radii of kHz quasi-periodic oscillations in Keplerian discs orbiting neutron stars (Research Note)

Authors

Edition

Astronomy & Astrophysics, FR - Francouzská republika, 2011, 0004-6361

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Philosophy and Science in Opava

DOI

UT WoS

000285193700070

Keywords in English

accretion, accretion disks ? stars: neutron ? X-rays: binaries ? X-rays: general

Tags

Tags

International impact, Reviewed

Links

GA202/09/0772, research and development project. LC06014, research and development project. MSM4781305903, plan (intention).
Změněno: 7/4/2021 07:42, Mgr. Pavlína Jalůvková

Abstract

V originále

Exchange of dominance between twin kHz quasi-periodic oscillations (QPOs) observed in some low-mass-X-ray-binaries (LMXB) suggests the possibility of a resonance between two oscillatory modes. We study the behaviour of the effective gravitational potential around specific resonant radii, and estimate the role of the higher-order terms governing the non-linear, anharmonic forcing. We discuss the impact it has on the mode amplitude in the linear and non?linear regimes. We also discuss a related possibility of lowering of the neutron star mass estimates from the highest observed QPO frequencies.