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Magnetic fields generated by r-modes in accreting millisecond pulsars

Cuofano, Carmine (2010) Magnetic fields generated by r-modes in accreting millisecond pulsars. PhD Thesis , Università degli Studi di Ferrara.

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    Abstract

    In rotating neutron stars the existence of the Coriolis force allows the presence of the so-called Rossby oscillations (r-modes) which are known to be unstable to emission of gravitational waves. In the Thesis, for the first time, we introduce the magnetic damping rate in the evolution equations of r-modes. We show that r-modes can generate very strong toroidal fields in the core of accreting millisecond pulsars by inducing differential rotation. We shortly discuss the instabilities of the generated magnetic field and its long time-scale evolution in order to clarify how the generated magnetic field can stabilize the star. Finally we discuss the possible astrophysical scenarios.

    Item Type:Thesis (PhD Thesis)
    Date:4 March 2010
    Tutor:Drago, Alessandro
    Coordinator:Frontera, Filippo
    Institution:Università degli Studi di Ferrara
    PhD:XXII Anno 2007 > FISICA
    Divisions:Dipartimento > Fisica
    Subjects:Area 02 - Scienze fisiche > FIS/04 Fisica nucleare e subnucleare
    Uncontrolled Keywords:magnetic field, compact star, millisecond pulsar, gravitational wave, r-mode, low mass x-ray binary
    Deposited on:22 Jul 2010 09:25

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