Name: formation of the power spectrum in the accreting compact x-ray objects (en Inglés)
SKU: 24966692
Price: 59740.00 CLP
Availability: InStock
Author: Makeev, Andrey
ISBN: 9783838399690

portada formation of the power spectrum in the accreting compact x-ray objects (en Inglés)

formation of the power spectrum in the accreting compact x-ray objects (en Inglés)

Formato

Libro Físico

Autor

Andrey Makeev

Editorial

LAP Lambert Academic Publishing

Año

2010

Idioma

Inglés

N° páginas

116

Encuadernación

Tapa Blanda

Dimensiones

22.9x15.2x0.7 cm

Peso

0.18 kg.

ISBN

3838399692

ISBN13

9783838399690

Categorías

Astronomía, espacio y tiempo

formation of the power spectrum in the accreting compact x-ray objects (en Inglés)

Andrey Makeev (Autor) · LAP Lambert Academic Publishing · Tapa Blanda

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Reseña del libro "formation of the power spectrum in the accreting compact x-ray objects (en Inglés)"

This work focuses on the timing properties of accreting neutron stars and black holes in binary systems. It aims at development of the physical alternative to the commonplace ad hoc description of the Fourier power density spectrum of X-ray timing signal. We employ diffusion theory to directly solve for X-ray luminosity fluctuations. The basic underlying physical assumption is that the observed variability of X-ray luminosity originates as the result of local fluctuations of the mass accretion rate, at all radii in the disk, that diffusively propagate outward. Suggested diffusion model of the power spectrum formation operates with parameters that are physical characteristics of the accretion flow: the diffusion time scale, Reynolds number of the flow (which is connected to the viscosity alpha-parameter), Keplerian and magnetosonic oscillation frequencies, radial size of the transition layer, and viscosity index, related to the viscosity distribution law in the system. These quantities constitute the core of temporal data used along with the spectral information to study physics of accretion.