Cosmological constraints on the radiation released during structure formation

Abstract

During the process of structure formation in the universe matter is converted into radiation through a variety of processes such as light from stars, infrared radiation from cosmic dust and gravitational waves from binary black holes/neutron stars and supernova explosions. The production of this astrophysical radiation background (ARB) could affect the expansion rate of the universe and the growth of perturbations. Here, we aim at understanding to which level one can constraint the ARB using future cosmological observations. We model the energy transfer from matter to radiation through an effective interaction between matter and astrophysical radiation. Using future supernova data from LSST and growth-rate data from Euclid we find that the ARB density parameter is constrained, at the 95% confidence level, to be ${\Omega }_{a{r}_0}<0.008$. Estimates of the energy density produced by well-known astrophysical processes give roughly ${\Omega }_{a{r}_0}\sim 10^{-5}$. Therefore, we conclude that cosmological observations will only be able to constrain exotic or not-well understood sources of radiation.

arXiv comment7 pages, 3 figures; v3 reflects version accepted for publication in EPJC, improved discussion

References in corpus (15)

• Cosmic Star Formation History
• Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
• Did LIGO detect dark matter?
• Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914
• The Cosmic Infrared Background: Measurements and Implications
• GW150914: Implications for the stochastic gravitational wave background from binary black holes
• The Diffuse Supernova Neutrino Background
• Gravitational wave background from binary systems
• A new framework for analyzing the effects of small scale inhomogeneities in cosmology
• Stochastic Gravitational-Wave Background due to Primordial Binary Black Hole Mergers
• Coupled dark matter-dark energy in light of near Universe observations
• Large-scale stable interacting dark energy model: Cosmological perturbations and observational constraints
• Dark Coupling and Gauge Invariance
• Model-independent constraints on the cosmological anisotropic stress
• Coupling dark energy to dark matter inhomogeneities

Cited by in corpus (4)

• Converting non-relativistic dark matter to radiation
• Lecture Notes in Cosmology
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