Detailed Information on Publication Record
2008
Gravitational excitation of high frequency QPOs
HLEDÍK, Stanislav and Zdeněk STUCHLÍKBasic information
Original name
Gravitational excitation of high frequency QPOs
Authors
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
UT WoS
000259760200010
Keywords in English
neutron stars, binary systems, QPOs, accretion discs
Tags
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.