Title of article :
Detecting X-ray QPOs in active galaxies Original Research Article
Author/Authors :
Simon Vaughan، نويسنده , , Philip Uttley، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2006
Abstract :
Since EXOSAT produced the first good quality X-ray light curves of Seyfert galaxies there have been several claims of quasi-periodic oscillations (QPOs). None of these have withstood repeated analyses and observations. We review some problems concerning the detection of QPOs.
Keywords :
Active galactic nuclei , Periodic oscillations , Time series analysis
Journal title :
Advances in Space Research
Journal title :
Advances in Space Research
