The high-energy Sun - probing the origins of particle acceleration on our nearest star

The high-energy Sun - probing the origins of particle acceleration on our nearest star
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高能太阳 - 探索离我们最近的恒星上粒子加速的起源

DOI:
10.1007/s10686-021-09798-6
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发表时间:
2021
影响因子:
3
通讯作者:
Matthews S
Matthews S
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Matthews S

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作为一个频繁的高能粒子加速器,太阳为我们提供了一个极好的天体物理实验室,以了解粒子加速的基本过程。利用电子辐射诊断表明,在复杂的磁场环境中,加速作用在亚秒级的时间尺度上,其中直接电场,波湍流和冲击波都必须做出贡献,尽管精确的细节严重缺乏。离子被假定以类似于电子的方式加速,但γ射线成像证实,发射源与X射线源在空间上是分开的,这表明了明显不同的加速机制。目前的X射线和γ射线光谱学仅提供了对加速粒子光谱的基本理解,因此总能量预算受到很大限制。此外,最近探测到的持续数小时的相对论离子特征,没有电子对应物,是一个谜。我们提出了一个单一的平台,直接测量的物理条件存在于能量释放网站和环境中的粒子传播和存款他们的能量。为了解决这个基本问题,我们设计了一套专用仪器,可以同时探测电子和离子进行观察;高(秒)时间分辨率光子谱(4 keV - 150 MeV),同时成像(1 keV - 30 MeV),偏振测量(5-1000 keV)和UV/EUV/SXR(软X射线)体系中的高空间和时间分辨率成像光谱。这些仪器将观测加速粒子在太阳大气中产生的各种辐射特征。
As a frequent and energetic particle accelerator, our Sun provides us with an excellent astrophysical laboratory for understanding the fundamental process of particle acceleration. The exploitation of radiative diagnostics from electrons has shown that acceleration operates on sub-second time scales in a complex magnetic environment, where direct electric fields, wave turbulence, and shock waves all must contribute, although precise details are severely lacking. Ions were assumed to be accelerated in a similar manner to electrons, but γ-ray imaging confirmed that emission sources are spatially separated from X-ray sources, suggesting distinctly different acceleration mechanisms. Current X-ray and γ-ray spectroscopy provides only a basic understanding of accelerated particle spectra and the total energy budgets are therefore poorly constrained. Additionally, the recent detection of relativistic ion signatures lasting many hours, without an electron counterpart, is an enigma. We propose a single platform to directly measure the physical conditions present in the energy release sites and the environment in which the particles propagate and deposit their energy. To address this fundamental issue, we set out a suite of dedicated instruments that will probe both electrons and ions simultaneously to observe; high (seconds) temporal resolution photon spectra (4 keV – 150 MeV) with simultaneous imaging (1 keV – 30 MeV), polarization measurements (5–1000 keV) and high spatial and temporal resolution imaging spectroscopy in the UV/EUV/SXR (soft X-ray) regimes. These instruments will observe the broad range of radiative signatures produced in the solar atmosphere by accelerated particles.
根据耀斑伽马射线线观测确定太阳光球层中的 (He-3)/H 比
DOI: --
发表时间: 1987
期刊:
影响因子: --
作者:
X. Hua;R. Lingenfelter
通讯作者: R. Lingenfelter
DOI: 10.1086/165477
发表时间: 1987-08
期刊: The Astrophysical Journal
影响因子: --
作者:
J. Seely;U. Feldman;G. Doschek
通讯作者: J. Seely;U. Feldman;G. Doschek
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发表时间: 2016
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L. Kleint
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来自伽马射线光谱的太阳大气丰度和耀斑加速离子的能量含量
DOI: 10.1086/309841
发表时间: 1995
期刊: The Astrophysical Journal Letters
影响因子: --
作者:
R. Ramaty;N. Mandzhavidze;B. Kozlovsky;R. Murphy
通讯作者: R. Murphy
2003 年 10 月/11 月太阳耀斑的伽马射线成像
DOI: 10.1086/505329
发表时间: 2006
期刊: The Astrophysical Journal Letters
影响因子: --
作者:
G. Hurford;S. Krucker;R. Lin;Richard A. Schwartz;G. Share;David M. Smith
通讯作者: David M. Smith