利用“万有引力场的环路定理”推算太阳内部温度  

Calculating the Temperature in the Sun’s Core Using LoopTheorem of Gravitational Field

作　　者：廖偲含 杨兴 鲁同所 胡婧 Liao Sihan;Yang Xing;Lu Tongsuo;Hu Jing(Department of Physics,Tibet University,Lhasa 850000,China;Shanghai Institute of Applied Physics,Chinese Academy of Science,Shanghai 201800,China)

机构地区：[1]西藏大学理学院,西藏拉萨850000 [2]中国科学院上海应用物理研究所,上海嘉定201800

出　　处：《海南大学学报（自然科学版）》2020年第3期216-225,共10页Natural Science Journal of Hainan University

基　　金：国家自然科学基金(11803024,11747128);西藏自治区自然科学基金(XZ2019ZRG-163);西藏大学教师学历提升“博士后计划”;西藏大学理学院2019院级教改项目。

摘　　要：利用静电场与万有引力场规律的相似性,建立引力场环路定理的概念,类比得到静态万有引力场的环路定理表达式,引入万有引力势能,并将太阳近似看成是密度分布具有球对称性的天体,建立分段密度分布函数,进一步推算太阳内部引力势能,参考太阳数值解模型,运用Mathematica拟合出太阳内部温度.与广为接受为了维持热核反应顺利进行,太阳(气体球)内部要达到流体静力学平衡而估算得到的1.5×10^7 K相吻合.In the report,based on the similarity between the electrostatic field and the law of universal gravitational field,the concept of the loop theorem of universal gravitational field was established,and the analogy was performed to obtain the loop theorem expression of the static gravitational field.Then,the gravitational potential energy was introduced.Due to the density of the sun is generally considered as a celestial body with symmetrical spherical distribution,after establishing a piecewise density distribution function,the gravitational potential energy inside the sun will be given.With the help of the sun numerical solution model,MATHEMATICA software was used to obtain the temperature in the core of the Sun.Our results are consistent with 1.5×10^7K estimated by hydrostatic equilibrium of the sun’s interior,which is to be achieved for sustaining a thermonuclear burn.

关 键 词：天文学 太阳核心温度 环路定理 引力势能 万有引力场 密度分布函数 

分 类 号：P182.8[天文地球—天文学]