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The 2017 September 6 Flare: Radio Bursts and Pulsations in the 22–5000 MHz Range and Associated Phenomena
The Astrophysical Journal Supplement Series ( IF 8.7 ) Pub Date : 2020-09-30 , DOI: 10.3847/1538-4365/abb19f
Marian Karlick 1 , Jn Rybk 2
Affiliation  

For the 2017 September 6 flare (SOL2017-Sep-06T11:53) we present not only unusual radio bursts but also their interesting time association with the other flare phenomena observed in extreme ultraviolet (EUV), white-light, X-ray, and γ -ray emissions. Using our new method based on wavelets we found quasi-periodic pulsations (QPPs) in several locations of the whole time–frequency domain of the analyzed radio spectrum (11:55–12:07 UT and 22–5000 MHz). Among them the drifting QPPs are new and the most interesting, especially a bidirectional QPP at the time of the hard X-ray and γ -ray peaks and a sunquake start. In the pre-impulsive phase we show an unusual drifting pulsation structure (DPS) in association with the EUV brightenings caused by the interaction of magnetic ropes. In the flare impulsive phase we found an exceptional radio burst drifting from 5000 to 800 MHz. In connection with this drifting burst, we show a U burst at about the onset time of an EUV writhed st...

中文翻译:

2017年9月6日耀斑:22-5000 MHz范围内的无线电爆炸和脉动及相关现象

对于2017年9月6日的耀斑(SOL2017-Sep-06T11:53),我们不仅展示了不寻常的无线电脉冲爆发,而且还展示了它们与极端紫外(EUV),白光,X射线和γ射线发射。使用基于小波的新方法,我们在分析的无线电频谱(11:55–12:07 UT和22–5000 MHz)的整个时频域的多个位置发现了准周期脉动(QPP)。其中,漂移的QPP是新的且最有趣的,尤其是在X射线和γ射线达到峰值且开始发生地震时的双向QPP。在冲激前期,我们展示了一种异常的漂移脉动结构(DPS),它与电磁绳的相互作用引起的EUV增亮有关。在耀斑脉冲阶段,我们发现了一个异常的无线电突发,其频率从5000 MHz漂移到800 MHz。关于这个漂移的爆发,我们显示了在EUV扭绞的开始时间大约U爆发。
更新日期:2020-10-02
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