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gr-qc2025
Primordial Black Hole Formation and Spin in Matter Domination Revisited
Weitao Ye, Yungui Gong, Tomohiro Harada +4
In this article, we calculate the mass distribution of primordial black holes (PBHs) formed in the matter-dominated (MD) era by the peak theory. We apply the Zel'dovich approximati…
gr-qc2025
Test particle motion around a black hole dressed with a spherically symmetric stationary fluid
Ariadna Uxue Palomino Ylla, Yasutaka Koga, Chul-Moon Yoo
We investigate the motion of a massive particle around a spherically symmetric black hole surrounded by a stationary and radial inflow of perfect fluid. The background spacetime is…