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Nonlinear Oscillation of the Magnetosphere around Neutron Stars

Published online by Cambridge University Press:  12 April 2016

Hitoshi Hanami
Hitoshi Hanami*
Affiliation:
Department of Physics, Hokkaido UniversitySapporo 060, JAPAN.

Summary

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We investigate the unsteady motion of mass reservoir formed by the accretion onto the magnetosphere around rotating neutron stars. The unsteady motion of the reservoir induces secondary accretion to neutron star by R-T instability. The nonperiodic or quasiperiodic phenomena of X-ray bursters seems to be related to this property of mass reservoir on the magnetosphere. We classify the typical dynamical state of the reservoir into three types with the parameters which are accretion rate acc and angular velocity of neutron star Ωs. They are nonsequential oscillation, sequential periodic (quasi-periodic) oscillation, and chaotic oscillation states.

Type
Part III. Chemical and Dynamical Structures of Exploding Stars
Information
International Astronomical Union Colloquium , Volume 108: Atmospherics Diagnostics of Stellar Evolution: Chemical Peculiarity, Mass Loss, and Explosion , 1988 , pp. 242 - 243
Copyright
Copyright © Springer-Verlag 1988

References

van der Klis, et al., 1985, Nature, 317, 681 Google Scholar
Hanami, H. 1987, M.N.R.A.S., submitted.Google Scholar