천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제41권2호
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- Pages.67.3-68
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- 2016
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- 1226-2692(pISSN)
Quantitative estimation of the energy ux during an explosive chromospheric evaporation in a white light are kernel observed by Hinode, IRIS, SDO, and RHESSI
- Lee, Kyoung-Sun (NAOJ) ;
- Imada, Shinsuke (Nagoya University) ;
- Watanabe, Kyoko (National Defense Academy) ;
- Bamba, Yumi (ISAS/JAXA) ;
- Brooks, David H. (George Mason University)
- 발행 : 2016.10.12
초록
An X1.6 flare occurred in AR 12192 on 2014 October 22 around 14:06 UT and was observed by Hinode, IRIS, SDO and RHESSI. We analyze a bright kernel which produces a white light flare (WLF) with continuum enhancement and a hard X-ray (HXR) peak. Taking advantage of the spectroscopic observations of IRIS and EIS, we measure the temporal variation of the plasma properties in the bright kernel in the chromosphere and corona. We found that explosive evaporation was observed when the WLF occurred, even though the intensity enhancement in hotter lines is quite weak. The temporal correlation of the WLF, HXR peak, and evaporation flows indicates that the WLF was produced by accelerated electrons. To understand the white light emission processes, we calculated the deposited energy flux from the non-thermal electrons observed by RHESSI and compared it to the dissipated energy estimated from the chromospheric lines (Mg II triplet) observed by IRIS. The deposited energy flux from the non-thermal electrons is about
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