Frequency correlations of QPOs based on a disk oscillation model in warped disks

被引：34

作者：

Kato, Shoji ^{[1
]}

机构：

[1] Nara Sangyo Univ, Dept Informat, Ikoma, Nara 6368503, Japan

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2007年 / 59卷 / 02期

关键词：

accretion; accrection disks; quasi-periodic oscillations; resonance; stars : neutron; X-rays; stars;

D O I：

10.1093/pasj/59.2.451

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 the observed frequency correlations among kHz QPOs and low-frequency QPOs over a wide range of frequencies.

引用

页码：451 / 455

页数：5

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