Frequency Correlations of QPOs Based on a Disk Oscillation Model in Warped Disks
Astrophysics
2015-06-24 v1
Abstract
In previous papers we proposed a model that high-frequency quasi-periodic oscillations (QPOs) observed in black-hole and neutron-star X-ray binaries are disk oscillations (inertial-acoustic and/or g-mode oscillations) resonantly excited on warped disks. In this paper we examine whether time variations of the QPOs and their frequency correlations observed in neutron-star X-ray binaries can be accounted for by this disk-oscillation model. By assuming that a warp has a time-dependent precession, we can well describe observed frequency correlations among kHz QPOs and LF QPOs in a wide range of frequencies.
Keywords
Cite
@article{arxiv.astro-ph/0701085,
title = {Frequency Correlations of QPOs Based on a Disk Oscillation Model in Warped Disks},
author = {Shoji Kato},
journal= {arXiv preprint arXiv:astro-ph/0701085},
year = {2015}
}
Comments
10 pages, to be published in PASJ 59(2007), No.2