QPO in transient pulsars

被引：17

作者：

Finger, MH ^{[1
]}

机构：

[1] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA

来源：

X-RAY TIMING AND COSMIC GAMMA RAY BURSTS | 1998年 / 22卷 / 07期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1016/S0273-1177(98)00136-7

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

QPOs have now been observed from five transient X-ray pulsars. Four of these are in Be/X-ray systems, and one is the newly discovered LMXB transient GRO J1744-28. I review the observations, and discuss their interpretation in terms of the beat or Keplerian frequency models. These models are successful in explaining the observations for two of the Be/X-ray transients. For one of these, A0535+262, the observations constrain the ratio of the radius of the accretion disk inner edge to the Alfven radius, providing new information on the accretion disk-magnetosphere boundary region. Neither model can explain the QPO in the remaining two Be/X-ray systems, nor that in GRO J1744-28. It is likely therefore that two or more QPO mechanisms are at work. I discuss the potential for gaining new insight into QPOs from analysis tools unique to pulsed systems, and discuss what we can learn from new observations. (C)1998 COSPAR. Published by Elsevier Science Ltd.

引用

页码：1007 / 1016

页数：10

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