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Correlated Temporal and Spectral Variability in Neutron Star and Black Hole X-Ray BinariesThe variability of neutron star and black hole X-ray sources has several dimensions, because of the roles played by different important time-scales. The variations on time scales of hours, weeks, and months, ranging from 50% to orders of magnitude, arise out of changes in the flow in the disk. The most important driving forces for those changes are probably various possible instabilities in the disk, though there may be effects with other dominant causes. The changes in the rate of flow appear to be associated with changes in the flow's configuration, as the accreting material approaches the compact object, for there are generally correlated changes in both the X-ray spectra and the character of the faster temporal variability. There has been a lot of progress in tracking these correlations, both for Z and Atoll neutron star low-mass X-ray binaries, and for black hole binaries. I will discuss these correlations and what they tell us about the physical states of the systems.
Document ID
20070015987
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Swank, J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
May 9, 2006
Subject Category
Astronomy
Meeting Information
Meeting: International Astronomy Meeting
Location: Sicily
Country: Italy
Start Date: June 19, 2006
End Date: June 24, 2006
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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