A1 Refereed original research article in a scientific journal

Global Energetics of Solar Powerful Events on 2017 September 6




AuthorsLi D, Warmuth A, Wang JC, Zhao HS, Lu L, Zhang QM, Dresing N, Vainio R, Palmroos C, Paassilta M, Fedeli A, Dominique M

PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES

Publication year2023

JournalResearch in Astronomy and Astrophysics

Journal name in sourceRESEARCH IN ASTRONOMY AND ASTROPHYSICS

Journal acronymRES ASTRON ASTROPHYS

Article number 095017

Volume23

Issue9

Number of pages14

ISSN1674-4527

DOIhttps://doi.org/10.1088/1674-4527/acd592(external)

Web address https://iopscience.iop.org/article/10.1088/1674-4527/acd592(external)

Preprint addresshttps://arxiv.org/abs/2305.00381(external)


Abstract
Solar flares and coronal mass ejections (CMEs) are thought to be the most powerful events on the Sun. They can release energy as high as & SIM;10(32) erg in tens of minutes, and also can release solar energetic particles (SEPs) into interplanetary space. We explore global energy budgets of solar major eruptions that occurred on 2017 September 6, including the energy partition of a powerful solar flare, and the energy budget of the accompanying CME and SEPs. In the wavelength range shortward of & SIM;222 nm, a major contribution of the flare radiated energy is in the soft X-ray (SXR) 0.1-7 nm domain. The flare energy radiated at wavelengths of Ly & alpha; and mid-ultraviolet is larger than that radiated in the extreme ultraviolet wavelengths, but it is much less than that radiated in the SXR waveband. The total flare radiated energy could be comparable to the thermal and nonthermal energies. The energies carried by the major flare and its accompanying CME are roughly equal, and they are both powered by the magnetic free energy in the NOAA AR 12673. Moreover, the CME is efficient in accelerating SEPs, and the prompt component (whether it comes from the solar flare or the CME) contributes only a negligible fraction.



Last updated on 2024-26-11 at 22:12