研究者情報 | 神奈川大学

ヒラノ　シンゴ Hirano Shingo 平野　信吾所属神奈川大学工学部応用物理学科職種助教
言語種別	英語
発行・発表の年月	2017/09
形態種別	学術雑誌
査読	査読あり
標題	Supersonic gas streams enhance the formation of massive black holes in the early universe
執筆形態	共著
掲載誌名	SCIENCE
掲載区分	国外
出版社・発行元	AMER ASSOC ADVANCEMENT SCIENCE
巻・号・頁	357(6358),pp.1375-1377
担当区分	筆頭著者
著者・共著者	Shingo Hirano,Takashi Hosokawa,Naoki Yoshida,Rolf Kuiper
概要	The origin of super-massive black holes in the early universe remains poorly understood. Gravitational collapse of a massive primordial gas cloud is a promising initial process, but theoretical studies have difficulty growing the black hole fast enough. We report numerical simulations of early black hole formation starting from realistic cosmological conditions. Supersonic gas motions left over from the Big Bang prevent early gas cloud formation until rapid gas condensation is triggered in a protogalactic halo. A protostar is formed in the dense, turbulent gas cloud, and it grows by sporadic mass accretion until it acquires 34,000 solar masses. The massive star ends its life with a catastrophic collapse to leave a black hole-a promising seed for the formation of a monstrous black hole.
DOI	10.1126/science.aai9119
ISSN	0036-8075/1095-9203
ORCIDのPut Code	37237751
PermalinkURL	http://orcid.org/0000-0002-4317-767X