The 21-cm signals from ultracompact minihaloes as a probe of primordial small-scale fluctuations Kunihiko Furugori, Katsuya T. Abe, Toshiyuki Tanaka, Daiki Hashimoto, Hiroyuki Tashiro, Kenji Hasegawa Last updated on Jul 25, 2023 Cite DOI arXiv cosmic background radiation dark ages reionization first stars inflation large-scale structure of Universe Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology