Abstract
Based on the analysis of the microwave observations at the frequency range of 2.60 – 3.80 GHz in the solar X1.3 flare event observed at the Solar Broadband RadioSpectrometer in Huairou (SBRS/Huairou) on 30 July 2005, an interesting reversed drifting quasi-periodic pulsating structure (R-DPS) is confirmed. The R-DPS is mainly composed of two drifting pulsating components: one is a relatively slow very short-period pulsation (VSP) with a period of about 130 – 170 ms, the other is a relatively fast VSP with a period of about 70 – 80 ms. The R-DPS has a weak left-handed circular polarization. Based on the synthetic investigations of Reuven Ramaty High Energy Solar Spectroscopic Imaging (RHESSI) hard X-ray, Geostationary Operational Environmental Satellite (GOES) soft X-ray observations, and magnetic field extrapolation, we suggest that the R-DPS possibly reflects flaring dynamic processes of the emission source regions.
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Acknowledgements
The authors would like to thank the referee for the helpful and valuable comments on this paper. We would also like to thank the GOES, RHESSI, MDI/SOHO, BBSO and SBRS/Huairou teams for providing observational data. This work was supported by NSFC Grant No. 10873021, 10921303, 10903013, 11103044, 11103039, MOST Grant No. 2011CB811401, and the National Major Scientific Equipment R&D Project ZDYZ2009-3.
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Wang, R., Tan, B., Tan, C. et al. Reversed Drifting Quasi-periodic Pulsating Structure in the X1.3 Solar Flare on 30 July 2005. Sol Phys 278, 411–419 (2012). https://doi.org/10.1007/s11207-012-9937-4
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DOI: https://doi.org/10.1007/s11207-012-9937-4