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Title:
Magnetohelioseismic Analysis of AR10720 Using Helioseismic Holography
Authors:
Moradi, H.; Donea, A.; Besliu-Ionescu, D.; Cally, P.; Lindsey, C.; Leka, K.
Publication:
Solar MHD Theory and Observations: A High Spatial Resolution Perspective ASP Conference Series, Vol. 354, Proceedings of the Conference Held 18-22 July, 2005, at the National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, USA. Edited by J. Leibacher, R. F. Stein, and H. Uitenbroek. San Francisco: Astronomical Society of the Pacific, 2006., p.168
Publication Date:
12/2006
Origin:
ASP
Bibliographic Code:
2006ASPC..354..168M

Abstract

We report on the recent discovery of one of the most powerful sunquakes detected to date produced by the January 15, 2005 X1.2 solar flare in active region 10720. We used helioseismic holography to image the acoustic source of the seismic waves produced by the flare. Egression power maps at 6 mHz with a 2 mHz bandwidth reveal a strong, compact acoustic source correlated with the footpoints of a coronal loop that hosted the flare. Using data from various solar observatories, we present a comprehensive analysis of the acoustic properties of the sunquake and investigate the role played by the configuration of the photospehric magnetic field in the production of flare generated sunquakes.

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