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Energy partition in a confined flare with an extreme-ultraviolet late phase View all abstracts by submitter

Qingmin Zhang   Submitted: 2021-04-08 19:48

In this paper, we reanalyze the M1.2 confined flare with a large extreme-ultraviolet (EUV) late phase on 2011 September 9, focusing on its energy partition. The radiation (~5.4x1030 erg) in 1-70 Å is nearly eleven times larger than the radiation in 70-370 Å, and is nearly 180 times larger than the radiation in 1-8 Å. The peak thermal energy of the post-flare loops is estimated to be (1.7-1.8)x1030 erg based on a simplified schematic cartoon. Based on previous results of Enthalpy-Based Thermal Evolution of Loops (EBTEL) simulation, the energy inputs in the main flaring loops and late-phase loops are (1.5-3.8)x1029 erg and 7.7x1029 erg, respectively. The nonthermal energy ((1.7-2.2)x1030 erg) of the flare-accelerated electrons is comparable to the peak thermal energy and is sufficient to provide the energy input of the main flaring loops and late-phase loops. The magnetic free energy (9.1x1031 erg) before flare is large enough to provide the heating requirement and radiation, indicating that the magnetic free energy is adequate to power the flare.

Authors: Q. M. Zhang, J. X. Cheng, Y. Dai, K. V. Tam, and A. A. Xu
Projects: GOES X-rays

Publication Status: Accepted for publication in A&A
Last Modified: 2021-04-09 12:10
Go to main E-Print page  Three-dimensional magnetic reconnection in astrophysical plasmas  Alfvn wave heating in partially ionized thin threads of solar prominences  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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