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The Skew of Polar Crown X-ray Arcades

Published online by Cambridge University Press:  12 April 2016

A.H. McAllister ,
A.J. Hundhausen ,
D. Mackay  and
E. Priest
A.H. McAllister
Affiliation:
Helio Research, 5212 Maryland Ave. La Crescenta CA 91214, USA
A.J. Hundhausen
Affiliation:
High Altitude Observatory, NCAR, PO Box 3000, Boulder, CO 80307, USA
D. Mackay
Affiliation:
University of St. Andrews, St. Andrews, KY16 9SS, U.K.
E. Priest
Affiliation:
University of St. Andrews, St. Andrews, KY16 9SS, U.K.

Abstract

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The one-to-one relationship between the chirality of filament channels and the skew (relative orientation) of the overlying coronal arcades can be coupled with the predictions for the axial component of polar crown filaments based on past magnetic field observations to predict the skew of polar crown arcades in the recent cycle 22. We have surveyed the actual skew as seen in the Yohkoh SXT images over the declining phase of cycle 22 and found a result opposite to that expected. The SXT arcades have been compared with numerical models to show that while some of this result can be explained by flux distribution around switchbacks, other mechanisms such as differential rotation are also needed.

Type
Global Patterns
Information
International Astronomical Union Colloquium , Volume 167: New Perspectives on Solar Prominences , 1998 , pp. 430 - 433
Copyright
Copyright © Astronomical Society of the Pacific 1998

References

Leroy, J.L., Bommier, V. and Sahal, S.-Brechot 1983, Solar Phys., 83, 135 CrossRefGoogle Scholar
Martin, S.F., Marquette, W. H. and Bilimoria, R. 1992, in The Solar Cycle, (ed.) Harvey, K. L., Astron. Soc. Pacific Conference Series 27, San Francisco, p. 53 Google Scholar
Martin, S.F., Bilimoria, R. and Tracadas, P. W. 1994, in Solar Surface Magnetism, (eds.) Rutten, R. and Schrijver, C. J., Kluwer Acad. Publ., Dordrecht, Holland, p. 303 CrossRefGoogle Scholar
Martin, S.F. and McAllister, A. H. 1998, The Chirality of X-ray Coronal Arcades Overlying Quiescent Filaments, ApJ, submittedGoogle Scholar
McAllister, A.H., Hundhausen, A. J., Burkepile, J.T. and McIntosh, P. 1998, Coronal Evolution and X-ray Arcades, J. Geophys. Res., to be submittedGoogle Scholar
Rust, D.M. 1967, ApJ, 150, 313 Google Scholar
van Ballegooijen, A.A. and Martens, P. C. H. 1990, ApJ, 361, 283 CrossRefGoogle Scholar
van Ballegooijen, A.A., Cartledge, N. P. and Priest, E. R. 1998, Magnetic Flux Transport and the Formation of Filament Channels on the Sun, ApJ, submittedGoogle Scholar