Published January 10, 2011
| Version v1
Journal article
PHASE TRANSITION GENERATED COSMOLOGICAL MAGNETIC FIELD AT LARGE SCALES
- 1. McWilliams Center for Cosmology and Department of Physics, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, PA 15213 (United States)
- 2. Abastumani Astrophysical Observatory, Ilia State University, 2A Kazbegi Ave., Tbilisi 0160 (Georgia)
- 3. Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, KS 66506 (United States)
Description
We constrain a primordial magnetic field (PMF) generated during a phase transition (PT) using the big bang nucleosynthesis bound on the relativistic energy density. The amplitude of the PMF at large scales is determined by the shape of the PMF spectrum outside its maximal correlation length scale. Even if the amplitude of the PMF at 1 Mpc is small, PT-generated PMFs can leave observable signatures in the potentially detectable relic gravitational wave background if a large enough fraction (1%-10%) of the thermal energy is converted into the PMF.
Availability note (English)
Available from http://dx.doi.org/10.1088/0004-637X/726/2/78Additional details
Identifiers
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 726
- Journal Issue
- 2
- Journal Page Range
- [8 p.]
- ISSN
- 0004-637X
- CODEN
- ASJOAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43046108
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- COSMIC RADIATION; GRAVITATIONAL WAVES; MAGNETIC FIELDS; NUCLEOSYNTHESIS; PHASE TRANSFORMATIONS; UNIVERSE
- Descriptors DEC
- IONIZING RADIATIONS; RADIATIONS; SYNTHESIS