Energy Partition in Two M-class Circular-ribbon Flares
Energy Partition in Two M-class Circular-ribbon Flares
复制标题
两个M级圆带状耀斑的能量分配
DOI:
10.3847/1538-4357/ab3a52
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发表时间:
2019-08
期刊:
影响因子:
--
通讯作者:
L. Feng
中科院分区:
文献类型:
--
作者:
Q. M. Zhang;J. X. Cheng;L. Feng
In this paper, we investigate the energy partition of two homologous M1.1 circular-ribbon flares (CRFs) in active region (AR) 12434. They were observed by SDO, GOES, and RHESSI on 2015 October 15 and 16, respectively. The peak thermal energy, nonthermal energy of flare-accelerated electrons, total radiative loss of hot plasma, and radiant energies in 1–8 Å and 1–70 Å of the flares are calculated. The two flares have similar energetics. The peak thermal energies are (1.94 ± 0.13) × 1030 erg. The nonthermal energies in flare-accelerated electrons are (3.9 ± 0.7) × 1030 erg. The radiative outputs of the flare loops in 1–70 Å, which are ∼200 times greater than the outputs in 1–8 Å, account for ∼62.5% of the peak thermal energies. The radiative losses of SXR-emitting plasma are one order of magnitude lower than the peak thermal energies. Therefore, the total heating requirements of flare loops including radiative loss are (2.1 ± 0.1) × 1030 erg, which could sufficiently be supplied by nonthermal electrons.
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DOI:
10.1086/430086
发表时间:
2005-06
期刊:
The Astrophysical Journal
影响因子:
--
作者:
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DOI:
10.3847/1538-4357/aa9995
发表时间:
2017-12
期刊:
ApJ
影响因子:
--
作者:
Xu Z.;Yang K.;Guo Y.;Zhao J.;Zhao Z. J.;Kashapova L.
通讯作者:
Kashapova L.
DOI:
10.3847/1538-4357/aa6341
发表时间:
2017-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
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通讯作者:
J. Qiu;D. Longcope;P. Cassak;E. Priest