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Polar surges and macrospicules II. Dynamics of an eruptive event from off-limb observations

Georgakilas, A. A. and Koutchmy, S. and Christopoulou, E. B. (2001) Polar surges and macrospicules II. Dynamics of an eruptive event from off-limb observations. Astronomy & Astrophysics, 370 (1). pp. 273-280. ISSN 0004-6361. https://resolver.caltech.edu/CaltechAUTHORS:20180307-085448199

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Abstract

We continue our study of polar surges and macrospicules at the period of solar minimum, analyzing high resolution multiwavelength limb observations that provide a clearer picture of the dynamical phenomena occurring well above the chromosphere of a polar cap. The time sequence of an erupting and impulsive polar event is examined from the low chromosphere to coronal heights, deriving both proper motions and Doppler velocities. Our observations suggest that there is a close association of polar surges with explosive events, supporting the hypothesis that magnetic reconnection triggered by emerging flux provides the accelerative mechanism for this polar region event.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1051/0004-6361:20010228DOIArticle
https://www.aanda.org/articles/aa/abs/2001/16/aa10569/aa10569.htmlPublisherArticle
Additional Information:© 2001 ESO. Received: 15 December 2000. Accepted: 23 January 2001. We would like to thank Dr. R. N. Smartt, the T.A.C. of NSO/SP and the staff of the Sacramento Peak Observatory for their warm hospitality and their help obtaining the observations. Further, we would like to thank the referee (Dr. H. Wöhl) for his suggestions that helped improve the paper. This work was partially supported by NSF grant ATM-9726147.
Funders:
Funding AgencyGrant Number
NSFATM-9726147
Subject Keywords:Sun: chromosphere, transition region
Issue or Number:1
Record Number:CaltechAUTHORS:20180307-085448199
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180307-085448199
Official Citation:Polar surges and macrospicules - II. Dynamics of an eruptive event from off-limb observations A. A. Georgakilas, S. Koutchmy and E. B. Christopoulou A&A, 370 1 (2001) 273-280 DOI: https://doi.org/10.1051/0004-6361:20010228
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85168
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:07 Mar 2018 17:12
Last Modified:03 Oct 2019 19:27

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