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A Scaling Law for Magnetic Flux Tubes on an AGN Accretion Disk
Published online by Cambridge University Press: 25 May 2016
Abstract
An ASCA observation of Seyfert galaxy NGC 3227 showed flares with a linear increase and exponential decrease similar to that of solar flares. We derive a scaling law relating the loop length of a magnetic flux tube to rise and decay times of the flare using cooling mechanisms suitable for the central engine of a Seyfert galaxy. The predicted loop lengths are consistent with physical constraints on the plasma dynamics, suggesting that the same mechanism which explains solar flares may explain variability in Seyfert galaxies.
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- Copyright © Astronomical Society of the Pacific 2000