منابع مشابه
On the stability of the Kerr metric
The reduced (in the angular coordinate φ) wave equation and Klein-Gordon equation are considered on a Kerr background and in the framework of C-semigroup theory. Each equation is shown to have a well-posed initial value problem, i.e., to have a unique solution depending continuously on the data. Further, it is shown that the spectrum of the semigroup’s generator coincides with the spectrum of a...
متن کاملThe Magnetorotational Instability in the Kerr Metric
The magnetorotational instability (MRI) is the leading candidate for driving turbulence, angular momentum transport, and accretion in astrophysical disks. I consider the linear theory of the MRI in a thin, equatorial disk in the Kerr metric. I begin by analyzing a mechanical model for the MRI that consists of two point masses on nearly circular orbits connected by a spring. I then develop a loc...
متن کاملMøller Energy for the Kerr-newman Metric
The energy distribution in the Kerr-Newman space-time is computed using the Møller energy-momentum complex. This agrees with the Komar mass for this space-time obtained by Cohen and de Felice. These results support the Cooperstock hypothesis. Typeset using REVTEX ∗E-mail: [email protected]
متن کاملMagnetically Driven Jets in the Kerr Metric
We compute a series of three-dimensional general relativistic magnetohydrodynamic simulations of accretion flows in the Kerr metric to investigate the properties of the unbound outflows that result. The overall strength of these outflows increases sharply with increasing black hole rotation rate, but a number of generic features are found in all cases. The mass in the outflow is concentrated in...
متن کاملA spacetime characterization of the Kerr metric
We obtain a characterization of the Kerr metric among stationary, asymptotically flat, vacuum spacetimes, which extends the characterization in terms of the Simon tensor (defined only in the manifold of trajectories) to the whole spacetime. More precisely, we define a three index tensor on any spacetime with a Killing field, which vanishes identically for Kerr and which coincides in the strictl...
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2015
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/32/12/124006