High-Energy Cosmology: gamma rays and neutrinos from beyond the galaxy
| dc.creator | Dermer, Charles D. | |
| dc.date | 2006-10-06 | |
| dc.date | 2006-11-06 | |
| dc.date.accessioned | 2026-07-07T10:40:23Z | |
| dc.date.available | 2026-07-07T10:40:23Z | |
| dc.description | Our knowledge of the high-energy universe is undergoing a period of rapid change as new astronomical detectors of high-energy radiation start to operate at their design sensitivities. Now is a boomtime for high-energy astrophysics, with new discoveries from Swift and HESS, results from MAGIC and VERITAS starting to be reported, the upcoming launches of the gamma-ray space telescopes GLAST and AGILE, and anticipated data releases from IceCube and Auger. A formalism for calculating statistical properties of cosmological gamma-ray sources is presented. Application is made to model calculations of the statistical distributions of gamma-ray and neutrino emission from (i) beamed sources, specifically, long-duration GRBs, blazars, and extagalactic microquasars, and (ii) unbeamed sources, including normal galaxies, starburst galaxies and clusters. Expressions for the integrated intensities of faint beamed and unbeamed high-energy radiation sources are also derived. A toy model for the background intensity of radiation from dark-matter annihilation taking place in the early universe is constructed. Estimates for the gamma-ray fluxes of local group galaxies, starburst, and infrared luminous galaxies are briefly reviewed. Because the brightest extragalactic gamma-ray sources are flaring sources, and these are the best targets for sources of PeV -- EeV neutrinos and ultra-high energy cosmic rays, rapidly slewing all-sky telescopes like MAGIC and an all-sky gamma-ray observatory beyond Milagro will be crucial for optimal science return in the multi-messenger age. | |
| dc.description | 10 pages, 3 figs, accepted for publication in the Barcelona Conference on Multimessenger Astronomy; corrected eq. 27, revised Fig. 3, added 2 refs | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0610195 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0610195 | |
| dc.identifier | Astrophys.SpaceSci.309:127-137,2007 | |
| dc.identifier | doi:10.1007/s10509-007-9417-8 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/181325 | |
| dc.subject | Astrophysics | |
| dc.title | High-Energy Cosmology: gamma rays and neutrinos from beyond the galaxy | |
| dc.type | text |