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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

A. M. K. LeRoux ,
D. W. Longcope  and
S. Tsuruta
A. M. K. LeRoux
Affiliation:
Physics Department, Montana State University, Bozeman, MT 59717, U.S.A.
D. W. Longcope
Affiliation:
Physics Department, Montana State University, Bozeman, MT 59717, U.S.A.
S. Tsuruta
Affiliation:
Physics Department, Montana State University, Bozeman, MT 59717, U.S.A.

Abstract

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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.

Type
Part II: Posters
Information
Symposium - International Astronomical Union , Volume 195: Highly Energetic Physical Processes and Mechanisms , 2000 , pp. 409 - 410
Copyright
Copyright © Astronomical Society of the Pacific 2000 

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