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Table of contents

Towards understanding the low-frequency QPO in accreting black hole binaries

Accreting black hole binaries

X-rays from accreting black holes binaries

X-rays from accreting black hole binaries

Spectral/timing states

General model of X-ray emission for low/hard state

Quasi-periodic oscillations

Why are QPO interesting and important?

Studies of QPO

Energy spectra of (low-f ) QPO

Energy spectra of QPO

Observed energy spectra of QPO

Slide 13

Energy spectrum of a QPO

Energy spectra from inverse-Compton process

QPO generation

Modulation of heating rate

Modulation of cooling rate

Modulation of reflection amplitude

Conclusions

Slide 21

Author: Piotr Zycki

Homepage: http://www.camk.edu.pl/~ptz/