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Formation of Primordial Supermassive Stars by Rapid Mass Accretion
Takashi Hosokawa, Harold W. Yorke, Kohei Inayoshi +2
Supermassive stars (SMSs) forming via very rapid mass accretion (Mdot >~ 0.1 Msun/yr) could be precursors of supermassive black holes observed beyond redshift of about 6. Extending…
Direct diagnostics of forming massive stars: stellar pulsation and periodic variability of maser sources
Kohei Inayoshi, Koichiro Sugiyama, Takashi Hosokawa +2
The 6.7 GHz methanol maser emission, a tracer of forming massive stars, sometimes shows enigmatic periodic flux variations over several 10-100 days. In this Letter, we propose that…
Pulsational instability of supergiant protostars: Do they grow supermassive by accretion?
Kohei Inayoshi, Takashi Hosokawa, Kazuyuki Omukai
Supermassive stars (SMSs; M>10^5 Msun) and their remnant black holes are promising progenitors for supermassive black holes (SMBHs) observed in the early universe at z>7. It has be…