科研之友
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摘要
We consider the evolution of primordial black holes by including nonstationarity in the formation process and accretion of radiation in Brans-Dicke theory. Specifically, we focus on how eta, the fraction of the horizon mass the black hole comprises capturing nonstationarity, affects the lifetimes of these primordial black holes. Our calculation reveals that the primordial black hole dynamics is controlled by the product f eta where f is the accretion efficiency. We also estimate the impact of eta through f eta on the primordial black holes' initial mass fraction constraint obtained from the gamma-ray background limit.
- 出版日期2010-12-14
