THE GENERATION OF STRONG MAGNETIC FIELDS DURING THE FORMATION OF THE FIRST STARS
THE GENERATION OF STRONG MAGNETIC FIELDS DURING THE FORMATION OF THE FIRST STARS
复制标题
第一批恒星形成过程中强磁场的产生
DOI:
10.1088/2041-8205/721/2/l134
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Ralf S. Klessen
中科院分区:
文献类型:
--
作者:
Sharanya Sur;Dominik R. G. Schleicher;Robi Banerjee;Christoph Federrath;Ralf S. Klessen
Cosmological hydrodynamical simulations of primordial star formation suggest that the gas within the first star-forming halos is turbulent. This has strong implications on the subsequent evolution, in particular on the generation of magnetic fields. Using high-resolution numerical simulations, we show that in the presence of turbulence, weak seed magnetic fields are exponentially amplified by the small-scale dynamo during the formation of the first stars. We conclude that strong magnetic fields are generated during the birth of the first stars in the universe, potentially modifying the mass distribution of these stars and influencing the subsequent cosmic evolution. We find that the presence of the small-scale turbulent dynamo can only be identified in numerical simulations in which the turbulent motions in the central core are resolved with at least 32 grid cells.
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影响因子:
1
作者:
M. Medvedev;Luís O. Silva;M. Fiore;R. Fonseca;W. Mori
通讯作者:
W. Mori
DOI:
10.1111/j.1365-2966.2008.14156.x
发表时间:
2008
影响因子:
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DOI:
--
发表时间:
2006
期刊:
ApJ 647
影响因子:
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S.
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