54 citations · 96 across the 7 of their papers we have counts for
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Free-free background radiation from accreting primordial black holes
Hiroyuki Tashiro, Katsuya T. Abe, Teppei Minoda
Baryonic gas falling onto a primordial black hole (PBH) emits photons via the free-free process. These photons can contribute the diffuse free-free background radiation in the freq…
Constraint on the early-formed dark matter halos using the free-free emission in the Planck foreground analysis
Katsuya T. Abe, Teppei Minoda, Hiroyuki Tashiro
We provide a new constraint on the small-scale density fluctuations, evaluating the diffuse background free-free emission from dark matter halos in the dark ages. If there exists a…
Population III star explosions and Planck 2018 data
Katsuya T. Abe, Hiroyuki Tashiro
We investigate the effect of the population III (Pop III) stars supernova explosion~(SN) on the high redshifts reionization history using the latest Planck data. It is predicted th…