J 2008

Gravitational excitation of high frequency QPOs

HLEDÍK, Stanislav and Zdeněk STUCHLÍK

Basic information

Original name

Gravitational excitation of high frequency QPOs

Authors

HLEDÍK, Stanislav and Zdeněk STUCHLÍK

Edition

Astronomy & Astrophysics, FR - Francouzská republika, 2008, 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

http://dx.doi.org/10.1051/0004-6361:20077061

UT WoS

000259760200010

Keywords in English

neutron stars, binary systems, QPOs, accretion discs

Tags

UF

Tags

International impact, Reviewed

Links

GA202/06/0041, research and development project. MSM4781305903, plan (intention).
Změněno: 8/12/2020 14:10, Mgr. Pavlína Jalůvková

Abstract

V originále

We discuss the possibility that high-frequency QPOs in neutron-star binary systems may result from forced resonant oscillations of matter in the innermost parts of the accretion disc, excited by gravitational perturbations coming from asymmetries of theneutron star or from the companion star. We find that neutron-star asymmetries could, in principle, be effective for inducing both radial and vertical oscillations of relevant amplitude while the binary companion might possibly produce significant radialoscillations but not vertical ones. Misaligned neutron-star quadrupole moments of a size advocated elsewhere for explaining limiting neutron star periods could be large enough also for the present purpose.
Displayed: 25/12/2024 20:53