English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

An Unstable Superfluid Stewartson Layer in a Differentially Rotating Neutron Star

MPS-Authors
/persons/resource/persons20663

Peralta,  Carlos
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

apjl_701_2_75.pdf
(Any fulltext), 3MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Peralta, C., & Melatos, A. (2009). An Unstable Superfluid Stewartson Layer in a Differentially Rotating Neutron Star. Astrophysical Journal Letters, 701(2), L75-L78. doi:10.1088/0004-637X/701/2/L75.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-64BB-B
Abstract
Experimental and numerical evidence is reviewed for the existence of a Stewartson layer in spherical Couette flow at small Ekman and Rossby numbers (E lsim 10–3, Ro lsim 10–2), the relevant hydrodynamic regime in the superfluid outer core of a neutron star. Numerical simulations of a superfluid Stewartson layer are presented for the first time, showing how the layer is disrupted by nonaxisymmetric instabilities. The unstable ranges of E and Ro are compared with estimates of these quantities in radio pulsars that exhibit glitches. It is found that glitching pulsars lie on the stable side of the instability boundary, allowing differential rotation to build up before a glitch.