光子海中的声速
Velocity of sound in the relic photon sea
摘要：
我们确定了光子的黑体气体和残留光子的气体中的声速。推导是基于光子气体的热力学理论和能量与质量之间的爱因斯坦关系。导出了n维黑体的谱形式。规定了1D、2D和3D黑体辐射。提出了高能宇宙粒子在宇宙遗迹光子海中以大于声速运动时产生马赫锥的可能性。关键词：声音，弹性，热力学，黑体，残余光子，马赫锥。
英文摘要：
We determine the velocity of sound in the blackbody gas of photons and in the gas of relic photons. Derivation is based on the thermodynamic theory of the photon gas and the Einstein relation between energy and mass. The spectral form for the n-dimensional blackbody is derived. The 1D, 2D and 3D blackbody radiation is specified. It is mentioned the possibility of creation of the Mach cone in case that the high energy cosmical particles moves with the speed greater than the velocity of sound in cosmical relic photon sea. Key words: Sound, elasticity, thermodynamics, blackbody, relic photons, Mach's cone.
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