Laser驱动内爆产生的小型致密天体的实验室X射线天文学
X-ray Astronomy in the Laboratory with a Miniature Compact Object Produced by Laser-Driven Implosion
摘要：
通过强辐射光电离的非热平衡等离子体的实验室光谱学是理解基于天文观测的致密物体（例如黑洞）的关键。本文描述了在实验室中，在明确和真实的条件下研究光致电离等离子体的实验。光电离等离子体在这里产生的0.5 keV普朗克X射线源，通过激光驱动的内爆。从光电离硅等离子体中测得的X射线光谱与钱德拉X射线卫星从天鹅座X-3和船帆座X-1双星中观测到的光谱相似。这表明在实验室中产生了极端的辐射场，然而，实验室光谱的理论解释与X射线天文学中普遍接受的解释相矛盾。该模型实验为X射线天文学计算程序的验证提供了一个新的实验平台。
英文摘要：
Laboratory spectroscopy of non-thermal equilibrium plasmas photoionized by intense radiation is a key to understanding compact objects, such as black holes, based on astronomical observations. This paper describes an experiment to study photoionizing plasmas in laboratory under well-defined and genuine conditions. Photoionized plasma is here generated using a 0.5-keV Planckian x-ray source created by means of a laser-driven implosion. The measured x-ray spectrum from the photoionized silicon plasma resembles those observed from the binary stars Cygnus X-3 and Vela X-1 with the Chandra x-ray satellite. This demonstrates that an extreme radiation field was produced in the laboratory, however, the theoretical interpretation of the laboratory spectrum significantly contradicts the generally accepted explanations in x-ray astronomy. This model experiment offers a novel test bed for validation and verification of computational codes used in x-ray astronomy.
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