AI 中文总结
本研究开发了INSPEX软件包，结合Solar Orbiter观测数据构建耀斑电子能谱，拟合得到20 keV以下的双热曲线，为推断太阳耀斑高能电子源区等离子体条件提供了新方法与基准案例。
AI 中文摘要
导致太阳耀斑中电子高效加速的内部条件尚未得到充分约束，目前尚不清楚被加速后向外进入日球层、向内进入色球层的电子群是否起源于同一区域。通过分析日球层电子群的能量分布，建模表明应能观测到其起源区域的证据，包括高温、高密度耀斑等离子体的存在。我们创建并使用名为INSPEX的新型原位能谱分析软件包，对2021年10月9日原位观测到的耀斑电子进行分析，结合Solar Orbiter的原位电子测量数据构建峰值通量和积分通量能谱，比较不同数据集组合方法对0.5-80 keV能量范围内能谱形状及提取参数的影响。我们对能谱的多分量形式拟合不同函数，测试热分量与幂律分量的组合并比较拟合统计量，发现20 keV以下能谱可由两条不同热曲线拟合，对应典型日冕/活动区和耀斑物质温度，其范围为1.4-4.1 MK和12.5-23.1 MK，具体数值取决于重bin窗口和峰值通量提取方法。本研究展示了INSPEX如何为研究不同仪器获取的电子能谱提供新颖且易用的方法，支持对多种能谱类型及加速、传输特征的研究，本次首次应用为类似耀斑的分析提供了基准案例。
英文摘要
The conditions within solar flares that lead to efficient electron acceleration are not well constrained. It is not clear whether the populations accelerated out into the heliosphere and inward into the chromosphere originate in the same regions. By analysing the energy distributions of heliospheric populations, modelling suggests that it should be possible to see evidence of their originating region(s), including the presence of hot, dense flare plasma. By creating and utilising a novel in situ spectral analysis package called INSPEX we have performed this analysis for flare electrons observed in situ on 09/10/2021, constructing both peak flux and fluence spectra from combined Solar Orbiter in situ electron measurements. We compare how differing methodologies for combining the datasets influence the spectral shapes and the retrieved parameters over an energy range of 0.5-80 keV. We fit different functions to the multi-component form of the energy spectra, testing combinations of thermal and/or power law components, comparing the fit statistics. We find that the spectra can be fitted with two distinct thermal curves at energies below 20 keV, corresponding to typical corona/active region and flaring material temperatures, varying between 1.4 - 4.1 MK and 12.5 - 23.1 MK depending on the rebinning window and peak flux extraction method. This study showcases how INSPEX can provide a novel and user-friendly methodology for studying electron spectra with different instrumentation, allowing investigation of multiple spectral types and signatures of acceleration and transport. This first application provides a benchmark case for the analysis of similar flares.
