The need for focused, hard X-ray investigations of the Sun
The need for focused, hard X-ray investigations of the Sun
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DOI：
10.3847/25c2cfeb.78fa7c49
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发表时间：
2023-06
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通讯作者：
L. Glesener;A. Shih;A. Caspi;R. Milligan;H. Hudson;M. Oka;J. Buitrago-Casas;F. Guo;D. Ryan;E. P. Kontar;A. Veronig;L. Hayes;A. Inglis;L. Golub;N. Vilmer;D. Gary;H. Reid;I. Hannah;G. Kerr;K. Reeves;J. Allred;S. Guidoni;Sijie Yu;S. Christe;S. Musset;B. Dennis;Juan Carlos Oliveros;P. S. Athiray;J. Vievering;S. White;A. Winebarger;J. Drake;N. Jeffrey;S. Antiochos;Jessie Duncan;Yixian Zhang;M. Alaoui;P. Simões;M. Battaglia;William Setterberg;Reed Masek;Thomas Y. Chen;M. Peterson;S. Krucker;M. Temmer;P. Saint-Hilaire;V. Petrosian;T. Knuth;C. Moore
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作者：
L. Glesener;A. Shih;A. Caspi;R. Milligan;H. Hudson;M. Oka;J. Buitrago-Casas;F. Guo;D. Ryan;E. P. Kontar;A. Veronig;L. Hayes;A. Inglis;L. Golub;N. Vilmer;D. Gary;H. Reid;I. Hannah;G. Kerr;K. Reeves;J. Allred;S. Guidoni;Sijie Yu;S. Christe;S. Musset;B. Dennis;Juan Carlos Oliveros;P. S. Athiray;J. Vievering;S. White;A. Winebarger;J. Drake;N. Jeffrey;S. Antiochos;Jessie Duncan;Yixian Zhang;M. Alaoui;P. Simões;M. Battaglia;William Setterberg;Reed Masek;Thomas Y. Chen;M. Peterson;S. Krucker;M. Temmer;P. Saint-Hilaire;V. Petrosian;T. Knuth;C. Moore
了解太阳大气中高能粒子的性质是太阳物理学中最重要的突出问题之一。耀斑加速粒子构成了耀斑能量预算的很大一部分;它们对事件的发展有很大的影响;它们是日光层中发现的高能粒子的重要来源;它们是高能天体物理学其他领域的唯一最重要的推论。尽管这一研究领域很重要，但在过去十年中，这一专题只得到了全面调查所需资源的一小部分。例如，在过去的二十年里，NASA没有选择能够研究这一主题的新的探索者级仪器。目前在理解耀斑加速电子方面取得的进展主要是利用EOVSA（NSF）、STIX（ESA）和努斯塔（NASA天体物理学）的数据。尽管在之前的太阳物理学十年调查中，FOXSI概念被列为SEE 2020使命的一部分，尽管NASA已经投入巨资通过FOXSI探空火箭实验的四次飞行为这种仪器做好技术准备。由于这项投资，仪器随时准备执行硬X射线使命，以调查耀斑加速电子。这篇白色论文描述了为什么应该尽快进行这项冒险的科学动机。
Understanding the nature of energetic particles in the solar atmosphere is one of the most important outstanding problems in heliophysics. Flare-accelerated particles compose a huge fraction of the flare energy budget; they have large influences on how events develop; they are an important source of high-energy particles found in the heliosphere; and they are the single most important corollary to other areas of high-energy astrophysics. Despite the importance of this area of study, this topic has in the past decade received only a small fraction of the resources necessary for a full investigation. For example, NASA has selected no new Explorer-class instrument in the past two decades that is capable of examining this topic. The advances that are currently being made in understanding flare-accelerated electrons are largely undertaken with data from EOVSA (NSF), STIX (ESA), and NuSTAR (NASA Astrophysics). This is despite the inclusion in the previous Heliophysics decadal survey of the FOXSI concept as part of the SEE2020 mission, and also despite NASA's having invested heavily in readying the technology for such an instrument via four flights of the FOXSI sounding rocket experiment. Due to that investment, the instrumentation stands ready to implement a hard X-ray mission to investigate flare-accelerated electrons. This white paper describes the scientific motivation for why this venture should be undertaken soon.