Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Primordial nucleosynthesis

D N Schramm1

  • 1University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA. dns@oddjob.uchicago.edu

Proceedings of the National Academy of Sciences of the United States of America
|February 21, 1998
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Summary of Recent Developments in Primordial Nucleosynthesis.

Annals of the New York Academy of Sciences·2015
Same author

Implications of a possible clustering of highest-energy cosmic rays.

Proceedings of the National Academy of Sciences of the United States of America·2000
Same author

Implications of a primordial origin for the dispersion in D/H in quasar absorption systems.

Proceedings of the National Academy of Sciences of the United States of America·1998
Same author

The age of the universe, dark matter, and structure formation.

Proceedings of the National Academy of Sciences of the United States of America·1998
Same author

Is there a Population II analogy to the F star lithium dip?

Proceedings of the National Academy of Sciences of the United States of America·1997
Same author

On the possibility of coherently stimulated recombination and cosmological structure generation: recombination instability.

Proceedings of the National Academy of Sciences of the United States of America·1995
Same journal

Chemotactic self-organization captures the dynamics of mammalian hair follicle patterning.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Tomographic imaging of superconducting order using particle-hole interference.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Inhibitory potential of autologous neutralizing antibodies sets quantitative limits on the rebound-competent HIV-1 reservoir.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Inferring epidemiological parameters under an infectious phylogeography model with visitor dynamics.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Analytical modeling for suction cup designs for skin-interfaced wearable devices.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Improving cell-free metabolism through direct integration of artificial respiratory chains.

Proceedings of the National Academy of Sciences of the United States of America·2026
See all related articles

New extragalactic deuterium observations are transforming Big Bang nucleosynthesis (BBN) models. Precise primordial deuterium measurements will refine stellar and galactic evolution models, confirming BBN

Area of Science:

  • Cosmology
  • Nuclear Astrophysics
  • Particle Physics

Background:

  • Big Bang nucleosynthesis (BBN) models have historically relied on stellar and galactic evolution theories to extrapolate light isotope abundances to primordial values.
  • Recent extragalactic deuterium observations are poised to significantly advance the field of BBN.
  • The accuracy of primordial deuterium measurements is crucial for understanding early universe cosmology.

Purpose of the Study:

  • To review the constraints Big Bang nucleosynthesis (BBN) places on the cosmological baryon density.
  • To highlight the shift in focus from BBN model concordance to using precise primordial deuterium (D/H) to constrain other cosmological models.
  • To compare baryonic density estimates from various cosmological probes.

Main Methods:

Related Experiment Videos

  • Analysis of extragalactic deuterium observations.
  • Comparison of Big Bang nucleosynthesis predictions with observed light isotope abundances.
  • Evaluation of cosmological baryon density using data from Lyman-alpha clouds, X-ray gas in clusters, and microwave anisotropy.

Main Results:

  • The BBN model shows remarkable concordance with current observations, leading to robust conclusions about baryon density.
  • The bulk of baryons in the universe appear to be 'dark'.
  • The majority of the universe's matter is nonbaryonic.

Conclusions:

  • Big Bang nucleosynthesis provides a robust constraint on the cosmological baryon density.
  • Future research will leverage precise primordial D/H measurements to refine stellar and galactic evolution models.
  • BBN constraints, alongside other cosmological data, indicate that dark matter constitutes the majority of the universe's matter content.