Is Primordial He Truly from Big Bang ?

Abstract

Population III stars are now believed to contribute to the observed Near Infrared Background (NIRB) and heavy element pollution of the intergalactic medium. Here we show that a Pop III contribution to the primordial He abundance consistent with NIRB constraints, might mask a lower value for the Big Bang Nucleosynthesis (BBN) He abundance.

5 pages, 2 figures. Accepted for publication on MNRAS

References in corpus (3)

• The Imprint of the Cosmic Dark Ages on the Near Infrared Background
• Zero-metallicity stars II. Evolution of very massive objects with mass loss
• Extreme Ultraviolet Absorption Lines in LyA Forest Absorbers and the Oxygen Abundance in the Intergalactic Medium

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• Sterile neutrinos with eV masses in cosmology -- how disfavoured exactly?
• A robust upper limit on N_eff from BBN, circa 2011
• Cosmological variation of deuteron binding energy, strong interaction and quark masses from big bang nucleosynthesis
• Primordial 4He abundance: a determination based on the largest sample of HII regions with a methodology tested on model HII regions
• Tests and problems of the standard model in Cosmology
• The Near Infrared Background: Interplanetary Dust or Primordial Stars?
• Measuring age, metallicity and abundance ratios from absorption line indices
• Cosmological Model Tests with JWST