Studying accreting black holes and neutron stars with time series: beyond the power spectrum

Simon Vaughan; Philip Uttley

doi:10.1117/12.724650

7 June 2007 Studying accreting black holes and neutron stars with time series: beyond the power spectrum

Simon Vaughan, Philip Uttley

Proceedings Volume 6603, Noise and Fluctuations in Photonics, Quantum Optics, and Communications; 660314 (2007) https://doi.org/10.1117/12.724650
Event: SPIE Fourth International Symposium on Fluctuations and Noise, 2007, Florence, Italy

Abstract

The fluctuating brightness of cosmic X-ray sources, particularly accreting black holes and neutron star systems, has enabled enormous progress in understanding the physics of turbulent accretion flows, the behaviour of matter on the surfaces of neutron stars and improving the evidence for black holes. Most of this progress has been made by analysing and modelling time series data in terms of their power and cross spectra, as will be discussed in other articles in this volume. Recently, attempts have been made to make use of other aspects of the data, by testing for non-linearity, non-Gaussianity, time asymmetry and by examination of higher order Fourier spectra. These projects, which have been made possible by the vast increase in data quality and quantity over the past decade, are the subject of this article.

Citation Download Citation

Simon Vaughan and Philip Uttley "Studying accreting black holes and neutron stars with time series: beyond the power spectrum", Proc. SPIE 6603, Noise and Fluctuations in Photonics, Quantum Optics, and Communications, 660314 (7 June 2007); https://doi.org/10.1117/12.724650

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