Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:0807.0794)
· References in the article
· Citations to the Article (2) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (40)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Neutrinos and Gamma Rays from Galaxy Clusters
Authors:
Wolfe, Brandon; Melia, Fulvio; Crocker, Roland M.; Volkas, Raymond R.
Affiliation:
AA(Physics Department, University of Arizona, Tucson, AZ 85721.; School of Physics, Research Centre for High Energy Physics, University of Melbourne, Victoria 3010, Australia.), AB(Physics Department, University of Arizona, Tucson, AZ 85721.; Steward Observatory, University of Arizona, Tucson, AZ 85721.), AC(School of Chemistry and Physics, University of Adelaide, South Australia 5005, Australia.; Current address: J. L. William Fellow, School of Physics, Monash University, Victoria 3800, Australia.), AD(School of Physics, Research Centre for High Energy Physics, University of Melbourne, Victoria 3010, Australia.)
Publication:
The Astrophysical Journal, Volume 687, Issue 1, pp. 193-201. (ApJ Homepage)
Publication Date:
11/2008
Origin:
UCP
ApJ Keywords:
Acceleration of Particles, Galaxies: Clusters: Individual: Name: Coma, Neutrinos, Radiation Mechanisms: Nonthermal, Relativity, X-Rays: Galaxies
DOI:
10.1086/591723
Bibliographic Code:
2008ApJ...687..193W

Abstract

The next generation of neutrino and γ-ray detectors should provide new insights into the creation and propagation of high-energy protons within galaxy clusters, probing both the particle physics of cosmic rays interacting with the background medium and the mechanisms for high-energy particle production within the cluster. In this paper we examine the possible detection of γ-rays (via the GLAST satellite) and neutrinos (via the ICECUBE and Auger experiments) from the Coma cluster of galaxies, as well as for the γ-ray-bright clusters Abell 85, 1758, and 1914. These three were selected from their possible association with unidentified EGRET sources, so it is not yet entirely certain that their γ-rays are indeed produced diffusively within the intracluster medium, as opposed to active galactic nuclei. It is not obvious why these inconspicuous Abell clusters should be the first to be seen in γ-rays, but a possible reason is that all of them show direct evidence of recent or ongoing mergers. Their identification with the EGRET γ-ray sources is also supported by the close correlation between their radio and (purported) γ-ray fluxes. Under favorable conditions (including a proton spectral index of 2.5 in the case of Abell 85, and ~2.3 for Coma, and Abell 1758 and 1914), we expect ICECUBE to make as many as 0.3 neutrino detections yr-1 from the Coma cluster of galaxies and as many as a few per year from the Abell clusters 85, 1758, and 1914. Also, Auger may detect as many as 2 events per decade at ~1018 eV from these γ-ray-bright clusters.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints