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	2012
形態種別	その他論文
査読	査読あり
標題	Dark matter annihilation feedback: effects upon collapse and fragmentation
執筆形態	共著
掲載誌名	FIRST STARS IV - FROM HAYASHI TO THE FUTURE
掲載区分	国外
出版社・発行元	AMER INST PHYSICS
巻・号・頁	1480,pp.418-420
国際共著	国際共著
著者・共著者	◎Rowan J. Smith,Fabio Iocco,Simon C. O. Glover,Dominik Schleicher,Ralf S. Klessen,Thomas Greif,Naoki Yoshida,Shingo Hirano
概要	We perform the first 3D simulations to include the effects of dark matter annihilation (DMA) in a calculation of the collapse of a primordial halo to near stellar densities. We couple the DMA to a time dependent chemical network, and include the effects of DMA induced ionisation. Despite an increase in the temperature of the halos, the gas temperature cannot rise above 2000 K due to cooling from H2 dissociation, and a normal Population III star forms at the centre. After the first star forms, the increased temperatures in the disk suppress further fragmentation. In our two simulated halos, fragmentation is suppressed completely in one, and only one secondary protostar forms in the second. However it is possible that in the future the baryons could become displaced from the dark matter peak and these effects could be reduced.
DOI	10.1063/1.4754406
ISSN	0094-243X
ORCIDのPut Code	31843086
PermalinkURL	http://orcid.org/0000-0002-4317-767X