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Theoretical reevaluations of the black hole mass - bulge mass relation - I. Effect of the seed black hole mass
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto +7
We explore the effect of varying the mass of the seed black hole on the resulting black hole mass - bulge mass relation at z ~ 0, using a semi-analytic model of galaxy formation co…
Dynamical Evolution of Primordial Dark Matter Haloes through Mergers
Go Ogiya, Daisuke Nagai, Tomoaki Ishiyama
Primordial dark matter (DM) haloes are the smallest gravitationally bound DM structures from which the first stars, black holes, and galaxies form and grow in the early universe. H…
Japanese Cosmic Dawn/Epoch of Reionization Science with the Square Kilometre Array
Kenji Hasegawa, Shinsuke Asaba, Kiyotomo Ichiki +10
Cosmic reionization is known to be a major phase transition of the gas in the Universe. Since astronomical objects formed in the early Universe, such as the first stars, galaxies a…
Where are the Low-Mass Population III Stars ?
Tomoaki Ishiyama, Kae Sudo, Shingo Yokoi +3
We study the number and the distribution of low mass Pop III stars in the Milky Way. In our numerical model, hierarchical formation of dark matter minihalos and Milky Way sized hal…