Lighting the Universe with filaments

Abstract

The first stars in the Universe form when chemically pristine gas heats as it falls into dark matter potential wells, cools radiatively due to the formation of molecular hydrogen, and becomes self-gravitating. We demonstrate with super-computer simulations that their properties depend critically on the currently unknown nature of the dark matter. If the dark matter particles have intrinsic velocities that wipe-out small-scale structure, then the first stars form in filaments with lengths of order the free-streaming scale, which can be about 10^20m (~3kpc, baryonic masses 10^7 solar masses) for realistic "warm dark matter" candidates. Fragmentation of the filaments forms stars with a range of masses which may explain the observed peculiar element abundance pattern of extremely metal-poor stars, while coalescence of fragments and stars during the filament's ultimate collapse may seed the super massive black holes that lurk in the centres of most massive galaxies.

Science, 14, September, 2007. 17 pages, 2 +3 figures with SOM. Full resolution paper can be found at http://star-www.dur.ac.uk/~gao/first/first.html

References in corpus (23)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• The cosmological simulation code GADGET-2
• Particle Dark Matter: Evidence, Candidates and Constraints
• Dark Matter Substructure in Galactic Halos
• The Formation of the First Star in the Universe
• Sterile Neutrinos as Dark Matter
• Halo Formation in Warm Dark Matter Models
• The Formation of the First Stars. I. The Primordial Star Forming Cloud
• Nucleosynthetic signatures of the first stars
• A stellar relic from the early Milky Way
• Formation of Primordial Stars in a LCDM Universe
• Can sterile neutrinos be the dark matter?
• Formation of Primordial Protostars
• Can sterile neutrinos be ruled out as warm dark matter candidates?
• Early Cosmological HII/HeIII Regions and Their Impact on Second-Generation Star Formation
• Halo Cores and Phase Space Densities: Observational Constraints on Dark Matter Physics and Structure Formation
• The cooling of shock-compressed primordial gas
• The Chemistry of the Early Universe
• Early Structure Formation and Reionization in a Warm Dark Matter Cosmology
• The Stellar Initial Mass Function in Primordial Galaxies
• The first generation of stars in LCDM cosmology
• Early structure in LCDM
• Population III Star Formation in a Lambda WDM Universe

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