The Burst Mode of Accretion in Primordial Star Formation
Astrophysics of Galaxies
2015-06-11 v1 Cosmology and Nongalactic Astrophysics
Solar and Stellar Astrophysics
Abstract
We present simulation results for the formation and long-term evolution of a primordial protostellar disk harbored by a first star. Using a 2+1D nonaxisymmetric thin disk numerical simulation, together with a barotropic relation for the gas, we are able to probe ~20 kyr of the disk's evolution. During this time period we observe fragmentation leading to loosely bound gaseous clumps within the disk. These are then torqued inward and accreted onto the growing protostar, giving rise to a burst phenomenon. The luminous feedback produced by this mechanism may have important consequences for the subsequent growth of the protostar.
Keywords
Cite
@article{arxiv.1208.0367,
title = {The Burst Mode of Accretion in Primordial Star Formation},
author = {A. L. DeSouza and E. I. Vorobyov and S. Basu},
journal= {arXiv preprint arXiv:1208.0367},
year = {2015}
}
Comments
3 pages, 2 figures, to appear in proceedings of First Stars IV meeting (Kyoto, Japan; 2012)