Damping of Type I X-ray Burst Oscillations by Convection
arXiv:0803.3814 · doi:10.1086/590424
Abstract
I construct a simple model of the convective burning layer during a type I X-ray burst to investigate the effects convection has on the stability of the layer to nonradial oscillations. A linear perturbation analysis demonstrates that the region is stable to nonradial oscillations when energy transport is convection-dominated, but it is unstable when energy transport is radiation-dominated. Thus, efficient convection always dampens oscillations. These results may explain the nondetection of oscillations during the peak of some X-ray bursts.
arXiv comment7 pages; improvements to introduction and discussion, model and results unchanged; accepted by ApJ
References in corpus (28)
- Nuclear-Powered Millisecond Pulsars and the Maximum Spin Frequency of Neutron Stars
- Models for Type I X-Ray Bursts with Improved Nuclear Physics
- Propagation of thermonuclear flames on rapidly rotating neutron stars: extreme weather during type I X-ray bursts
- Discovery of coherent millisecond X-ray pulsations in Aql X-1
- Rotational Evolution During Type I X-Ray Bursts
- Exposing the Nuclear Burning Ashes of Radius Expansion Type I X-ray Bursts
- Evidence for a Millisecond Pulsar in 4U 1636-53 During a Superburst
- X-ray Bursts from the Accreting Millisecond Pulsar XTE J1814-338
- RXTE Discovery of Coherent Millisecond Pulsations during an X-ray Burst from KS 1731-260
- On the Amplitude of Burst Oscillations in 4U 1636-54: Evidence for Nuclear Powered Pulsars
- Nearly Coherent Oscillations in Type I X-Ray Bursts from KS 1731-260
- R-Modes on Rapidly Rotating, Relativistic Stars: I. Do Type-I Bursts Excite Modes in the Neutron-Star Ocean?
- Millisecond Oscillations and Photospheric Radius Expansion in Thermonuclear X-Ray Bursts
- The Frequency Stability of Millisecond Oscillations in Thermonuclear X-Ray Bursts
- On the Frequency Evolution of X-ray Brightness Oscillations During Thermonuclear X-ray Bursts: Evidence for Coherent Oscillations
- Surface Modes on Bursting Neutron Stars and X-ray Burst Oscillations
- The Latitude of Type I X-Ray Burst Ignition on Rapidly Rotating Neutron Stars
- Ignition latitude and the shape of Type I X-ray bursts
- Discovery of the Spin Frequency of 4U 0614+09 with SWIFT/BAT
- Surface r Modes and Burst Oscillations of Neutron Stars
- Light curves of oscillating neutron stars
- The Energy Dependence of Neutron Star Surface Modes and X-ray Burst Oscillations
- R-Modes on Rapidly Rotating, Relativistic Stars : II. Blackbody Emission
- Timing properties of XB 1254-690
- Evolution of the bursting-layer wave during a Type 1 X-ray burst
- Unstable Nonradial Oscillations on Helium Burning Neutron Stars
- Thermonuclear Flame Spreading on Rapidly Spinning Neutron Stars: Indications of the Coriolis Force?
- Generation of Type I X-ray Burst Oscillations by Unstable Surface Modes