Characterising anomalous transport in accretion disks from X-ray observations

J Greenhough*, SC Chapman, S Chaty, RO Dendy, G Rowlands

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We examine the time variation of the total X-ray flux from three sources and find that the signal from the Crab (non-accreting) is uncorrelated, the Cygnus X-1 signal is correlated on timescales up to three years, and in the GRS1915+105 signal correlation may extend to only a few days. The method we use also quantifies the distributions of fluctuations and hence constrains turbulence/instability models of accretion disks.

Original languageEnglish
Title of host publicationStatistical Challenges In Astronomy
EditorsED Feigelson, GJ Babu
Place of PublicationNEW YORK
PublisherSpringer-Verlag GmbH
Pages423-424
Number of pages2
ISBN (Print)0-387-95546-1
Publication statusPublished - 2003
Event3rd Statistical Challenges in Modern Astronomy Conference (SCMA III) - UNIVERSITY PK, Panama
Duration: 18 Jul 200121 Jul 2001

Conference

Conference3rd Statistical Challenges in Modern Astronomy Conference (SCMA III)
Country/TerritoryPanama
Period18/07/0121/07/01

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