405 citations · 5.4k across the 143 of their papers we have counts for
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Spins of primordial black holes formed with a soft equation of state
Daiki Saito, Tomohiro Harada, Yasutaka Koga +1
We investigate the probability distribution of the spins of primordial black holes (PBHs) formed in the universe dominated by a perfect fluid with the linear equation of state $p=w…
Revisiting compaction functions for primordial black hole formation
Tomohiro Harada, Chul-Moon Yoo, Yasutaka Koga
Shibata and Sasaki [arXiv:gr-qc/9905064] introduced the so-called compaction function. Since then, it has been empirically established that the maximum value of this function (or i…
Hairy black holes in AdS with Robin boundary conditions
Tomohiro Harada, Takaaki Ishii, Takuya Katagiri +1
We study hairy black holes in Einstein-Maxwell-complex scalar theory in four-dimensional asymptotically global anti-de Sitter (AdS) spacetime when the Robin boundary conditions are…