Early Black Hole formation by accretion of gas and dark matter

被引：21

作者：

Umeda, Hideyuki ^{[1
]}

Yoshida, Naoki ^{[2
]}

Nomoto, Ken'ichi ^{[2
]}

Tsuruta, Sachiko ^{[3
]}

Sasaki, Mei ^{[1
]}

Ohkubo, Takuya ^{[1
]}

机构：

[1] Univ Tokyo, Sch Sci, Dept Astron, Tokyo 1130033, Japan

[2] Univ Tokyo Kashiwa, Inst Phys & Math Universe, Chiba 2778568, Japan

[3] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2009年 / 08期

关键词：

first stars; astrophysical black holes; 1ST STARS; EVOLUTION; ANNIHILATION; POPULATION; QUASARS; CAPTURE; SIMULATIONS;

D O I：

10.1088/1475-7516/2009/08/024

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent discovery of luminous quasars at z > 6 has posed a severe challenge to the theory of structure formation of the universe. These quasars are thought to be powered by supermassive blackholes (SMBHs). However no consensus is yet to be reached as to the origin and early formation mechanism of massive SMBHs. We propose a model in which intermediate-mass black holes (IMBHs) with mass of similar to 10(4) M-circle dot are formed in early dark matter halos. We carry out detailed stellar evolution calculations for the first generation stars including annihilation energy of dark matter (DM) particles. We show that very massive stars, as massive as 10(4) M-circle dot, can be formed in an early DM halo. Such stars are extremely bright with Log L/L-circle dot greater than or similar to 8.2. They will gravitationally collapse to form IMBHs. These black holes could have seeded the formation of early SMBHs

引用

页数：13

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