A model for quasi-periodic oscillations in low-mass X-ray binaries

Details A model for quasi-periodic oscillations in low-mass X-ray binaries A model for quasi-periodic oscillations in low-mass X-ray binaries

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.317..597h&link_type=abstract

Nature (ISSN 0028-0836), vol. 317, Oct. 17, 1985, p. 597-599.

Physics

30

Dynamo Theory, Neutron Stars, Stellar Magnetic Fields, Stellar Oscillations, X Ray Binaries, Boundary Layers, Dwarf Novae

Scientific paper

Quasi-periodic millisecond oscillations in the X-ray flux of two low-mass X-ray binaries, GX 5-1 and Sco X-1, were recently reported. The authors propose that, as in the case of dwarf novae, oscillations in low-mass X-ray binaries are caused by transient magnetic fields generated by turbulent dynamo action in the boundary layer and possibly in the corona of the accreting neutron star. The magnetic fields created in this way may cause bright spots with lifetimes of a few rotation periods to appear randomly on the neutron star surface. The rotation of this star's outer layers, together with the appearance and disappearance of the spots at random azimuthal positions, then gives rise to oscillations with the coherence characteristics reported in the observations.

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