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arXiv · 2306.11810

Spinning primordial black holes formed during a matter-dominated era

Eloy de Jong·Josu C. Aurrekoetxea·Eugene A. Lim·Tiago França
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Abstract

We study the formation of spinning primordial black holes during an early matter-dominated era. Using non-linear 3+1D general relativistic simulations, we compute the efficiency of mass and angular momentum transfer in the process -- which we find to be $\mathcal{O}(10\%)$ and $\mathcal{O}(5\%)$, respectively. We show that subsequent evolution is important due to the seed PBH accreting non-rotating matter from the background, which decreases the dimensionless spin. Unless the matter era is short, we argue that the final dimensionless spin will be negligible.

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Eloy de Jong, Josu C. Aurrekoetxea, Eugene A. Lim, Tiago França. 2023-06-20. Spinning primordial black holes formed during a matter-dominated era. https://arxiv.org/abs/2306.11810

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