Dark radiation emerging after big bang nucleosynthesis?

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.063520· OSTI ID:21537513

Fischler, Willy; Meyers, Joel ^[1]

---

1. Theory Group, Department of Physics, University of Texas, Austin, Texas 78712 (United States) and Texas Cosmology Center, University of Texas, Austin, Texas 78712 (United States)

We show how recent data from observations of the cosmic microwave background may suggest the presence of additional radiation density which appeared after big bang nucleosynthesis. We propose a general scheme by which this radiation could be produced from the decay of nonrelativistic matter, we place constraints on the properties of such matter, and we give specific examples of scenarios in which this general scheme may be realized.

• OSTI ID: 21537513
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 6; Other Information: DOI: 10.1103/PhysRevD.83.063520; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DECAY
DENSITY
NONLUMINOUS MATTER
NUCLEOSYNTHESIS
RELICT RADIATION
ELECTROMAGNETIC RADIATION
MATTER
MICROWAVE RADIATION
PHYSICAL PROPERTIES
RADIATIONS
SYNTHESIS