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Characterising anomalous transport in accretion disks from X-ray observations
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UNSPECIFIED (2003) Characterising anomalous transport in accretion disks from X-ray observations. In: 3rd Statistical Challenges in Modern Astronomy Conference (SCMA III), PENN STATE UNIV, UNIVERSITY PK, PA, JUL 18-21, 2001. Published in: STATISTICAL CHALLENGES IN ASTRONOMY pp. 423-424. ISBN 0-387-95546-1.
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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.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | Q Science > QB Astronomy Q Science > QA Mathematics |
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Journal or Publication Title: | STATISTICAL CHALLENGES IN ASTRONOMY | ||||
Publisher: | SPRINGER | ||||
ISBN: | 0-387-95546-1 | ||||
Editor: | Feigelson, ED and Babu, GJ | ||||
Official Date: | 2003 | ||||
Dates: |
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Number of Pages: | 2 | ||||
Page Range: | pp. 423-424 | ||||
Publication Status: | Published | ||||
Title of Event: | 3rd Statistical Challenges in Modern Astronomy Conference (SCMA III) | ||||
Location of Event: | PENN STATE UNIV, UNIVERSITY PK, PA | ||||
Date(s) of Event: | JUL 18-21, 2001 |
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