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SPIN EVOLUTION OF ISOLATED NEUTRON STARS:
SPINDOWN THEOREM.
V.M.Lipunov and S.B.Popov
Department of Physics, Moscow University,
119899, Moscow, Russia
Sternberg Astronomical Institute,
Universitetsky pr. 13, Moscow, Russia

Abstract:

In this article we give detail consideration of the possible scenario of evolution of isolated neutron stars (INS's).

The new points of our consideration:

-we give additional arguments for the short time scale of the Ejector stage ( yrs ).

-we proposed specific SPINDOWN THEOREM and give some arguments for its validity. Discovery of accreting INS's will means that SPINDOWN THEOREM is true.

-we consider firstly evolution of spin period of a NS on the accretion stage and predict that its period sec and INS's can be observed as pulsating X-ray sources.

-we consider new idea of stochastic acceleration of the very old NS's due to accretion of turbulizated interstellar medium.

-last point means that INS can be spin up and spin down with equal probability.

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