We present results of our preliminary analysis of acoustically active X-class flare of September 7, 2011. We report two acoustic sources detected via acoustic holography and verified by finding a ridge in time-distance diagrams. We compare the directional information extracted from time-distance and acoustic holography, showing a good agreement in this case. We report that the direction where amplitude of the wave-front is the largest lies through the strong magnetic field and sunspot, suggesting that absorption of the acoustic wave power by magnetic field can be ruled out as a wave anisotropy mechanism in this case.
@article{arxiv.1304.5805,
title = {On the Seismicity of September 7, 2011 X1.8-class Flare},
author = {S. Zharkov and L. M. Green and S. A. Matthews and V. V. Zharkova},
journal= {arXiv preprint arXiv:1304.5805},
year = {2015}
}
Comments
Proceedings of "Eclipse on the Coral Sea: Cycle 24 Ascending GONG 2012/LWS/SDO-5/SOHO-27" meeting, November 12-16, 2012, Palm Cove, Queensland