Particle acceleration in solar flares with imaging-spectroscopy in soft X-rays
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arXiv
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2023
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| author | Oka, Mitsuo Caspi, Amir Chen, Bin Cheung, Mark Drake, James Gary, Dale Glesener, Lindsay Guo, Fan Ji, Hantao Li, Xiaocan Nakamura, Takuma Narukage, Noriyuki Reeves, Katharine Saint-Hilaire, Pascal Sakao, Taro Shen, Chengcai Winebarger, Amy Woods, Tom |
| author_facet | Oka, Mitsuo Caspi, Amir Chen, Bin Cheung, Mark Drake, James Gary, Dale Glesener, Lindsay Guo, Fan Ji, Hantao Li, Xiaocan Nakamura, Takuma Narukage, Noriyuki Reeves, Katharine Saint-Hilaire, Pascal Sakao, Taro Shen, Chengcai Winebarger, Amy Woods, Tom |
| contents | Particles are accelerated to very high, non-thermal energies during explosive energy-release phenomena in space, solar, and astrophysical plasma environments. In the case of solar flares, it has been established that magnetic reconnection plays an important role for releasing the magnetic energy, but it remains unclear if or how magnetic reconnection can further explain particle acceleration during flares. Here we argue that the key issue is the lack of understanding of the precise context of particle acceleration but it can be overcome, in the near future, by performing imaging-spectroscopy in soft X-rays (SXRs). Such observations should be complemented by observations in other wavelengths such as extreme-ultraviolets (EUVs), microwaves, hard X-rays (HXRs), and gamma-rays. Also, numerical simulations will be crucial for further narrowing down the particle acceleration mechanism in the context revealed by the observations. Of all these efforts, imaging-spectroscopy in SXRs, if successfully applied to large limb flares, will be a milestone in our challenge of understanding electron acceleration in solar flares and beyond, i.e. the Plasma Universe. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_04909 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Particle acceleration in solar flares with imaging-spectroscopy in soft X-rays Oka, Mitsuo Caspi, Amir Chen, Bin Cheung, Mark Drake, James Gary, Dale Glesener, Lindsay Guo, Fan Ji, Hantao Li, Xiaocan Nakamura, Takuma Narukage, Noriyuki Reeves, Katharine Saint-Hilaire, Pascal Sakao, Taro Shen, Chengcai Winebarger, Amy Woods, Tom Solar and Stellar Astrophysics High Energy Astrophysical Phenomena Plasma Physics Space Physics Particles are accelerated to very high, non-thermal energies during explosive energy-release phenomena in space, solar, and astrophysical plasma environments. In the case of solar flares, it has been established that magnetic reconnection plays an important role for releasing the magnetic energy, but it remains unclear if or how magnetic reconnection can further explain particle acceleration during flares. Here we argue that the key issue is the lack of understanding of the precise context of particle acceleration but it can be overcome, in the near future, by performing imaging-spectroscopy in soft X-rays (SXRs). Such observations should be complemented by observations in other wavelengths such as extreme-ultraviolets (EUVs), microwaves, hard X-rays (HXRs), and gamma-rays. Also, numerical simulations will be crucial for further narrowing down the particle acceleration mechanism in the context revealed by the observations. Of all these efforts, imaging-spectroscopy in SXRs, if successfully applied to large limb flares, will be a milestone in our challenge of understanding electron acceleration in solar flares and beyond, i.e. the Plasma Universe. |
| title | Particle acceleration in solar flares with imaging-spectroscopy in soft X-rays |
| topic | Solar and Stellar Astrophysics High Energy Astrophysical Phenomena Plasma Physics Space Physics |
| url | https://arxiv.org/abs/2306.04909 |