Frampton Paul H
Dipartimento di Matematica e Fisica "Ennio De Giorgi", Università del Salento and INFN-Lecce, Via Arnesano, 73100 Lecce, Italy.
Entropy (Basel). 2022 Aug 22;24(8):1171. doi: 10.3390/e24081171.
We discuss the relationship between dark matter and the entropy of the universe, with the premise that dark matter exists in the form of primordial black holes (PBHs) in a hierarchy of mass tiers. The lightest tier includes all PBHs with masses below one hundred solar masses. The second-lightest tier comprises intermediate-mass PIMBHs within galaxies, including the Milky Way. Supermassive black holes at galactic centres are in the third tier. We are led to speculate that there exists a fourth tier of extremely massive PBHs, more massive than entire galaxies. We discuss future observations by the Rubin Observatory and the James Webb Space Telescope.
我们讨论暗物质与宇宙熵之间的关系，前提是暗物质以原初黑洞（PBH）的形式存在于一个质量层级体系中。最轻的层级包括所有质量低于100个太阳质量的PBH。次轻的层级包括星系（包括银河系）内的中等质量原初中等质量黑洞（PIMBH）。星系中心的超大质量黑洞处于第三层级。我们进而推测存在第四层级的极其巨大的PBH，其质量比整个星系还大。我们讨论了鲁宾天文台和詹姆斯·韦布空间望远镜未来的观测。
