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	Radiative cooling implementations in simulations of primordial star formation
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	AIP
巻・号・頁	1480,pp.373-375
担当区分	筆頭著者,責任著者
著者・共著者	◎Shingo Hirano,Naoki Yoshida
概要	We study the thermal evolution of a primordial star-forming gas cloud using the three-dimensional cosmological simulation. We critically examine how assumptions and approximations made in calculations of radiative cooling rates affect the dynamics of the collapsing gas cloud. We run the numerical simulation with different treatment to compute gas opacity, using the three-dimensional calculation and simplified fitting function. We find that there are time-and direction-dependence of opacity and the gravitational collapse of the cloud core is accelerated when the isotropic fitting formula is used. We conclude that physically motivated implementation of radiative transfer is necessary to follow accurately the thermal and chemical evolution of a primordial gas to high densities.
DOI	10.1063/1.4754391
ISSN	0094-243X
ORCIDのPut Code	31843040