Assessing The Starburst Contribution to the Gamma-Ray and Neutrino Backgrounds

Abstract

If cosmic ray protons interact with gas at roughly the mean density of the interstellar medium in starburst galaxies, then pion decay in starbursts is likely to contribute significantly to the diffuse extra-galactic background in both gamma-rays and high energy neutrinos. We describe the assumptions that lead to this conclusion and clarify the difference between our estimates and those of Stecker (2006). Detection of a single starburst by GLAST would confirm the significant contribution of starburst galaxies to the extra-galactic neutrino and gamma-ray backgrounds.

arXiv comment3 pages, 2 figures, emulateapj

References in corpus (3)

• The Starburst Contribution to the Extra-Galactic Gamma-Ray Background
• The History of Cosmological Star Formation: Three Independent Approaches and a Critical Test Using the Extragalactic Background Light
• Are Diffuse High Energy Neutrinos and Gamma-Rays from Starburst Galaxies Observable?

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• Anisotropies in the diffuse gamma-ray background measured by the Fermi LAT
• The Star-Forming Galaxy Contribution to the Cosmic MeV and GeV Gamma-Ray Background
• Using High-Energy Neutrinos As Cosmic Magnetometers
• Cosmic Rays VI - Starburst galaxies at multiwavelengths
• Olber's Paradox for Superluminal Neutrinos: Constraining Extreme Neutrino Speeds at TeV-ZeV Energies with the Diffuse Neutrino Background
• Multi-Messenger Connections among High-Energy Cosmic Particles