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Quasi-periodic wiggles of microwave zebra structures in a solar flare View all abstracts by submitter

Valery Nakariakov   Submitted: 2013-09-23 10:03

Quasi-periodic wiggles of microwave zebra pattern structures with period range from about 0.5 s to 1.5 s are found in a X-class solar flare on 2006 December 13 at the 2.6-3.8 GHz with the Chinese Solar Broadband Radio Spectrometer (SBRS/Huairou). Periodogram and correlation analysis show that the wiggles have two-three significant periodicities and almost in phase between stripes at different frequency. The Alfvén speed estimated from the zebra pattern structures is about 700 km s-1. We obtain the spatial size of the waveguiding plasma structure to be about 1 Mm with the detected period of about 1 s. It suggests the ZP wiggles can be associated with the fast magnetoacoustic oscillations in the flaring active region. The lack of a significant phase shift between wiggles of different stripes suggests that the ZP wiggles are caused by a standing sausage oscillation.

Authors: Sijie Yu, V. M. Nakariakov, L. A. Selzer, Baolin Tan and Yihua Yan
Projects: None

Publication Status: ApJ (accepted)
Last Modified: 2013-09-25 17:56
Go to main E-Print page  Migration and Extension of Solar Active Longitudinal Zones  Study on Triggering Process of Solar Flares Based on Hinode/SOT Observations  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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