Diffuse gamma rays from discrete extragalactic sources

A. W. Strong; A. W. Wolfendale; D. M. Worrall

Diffuse gamma rays from discrete extragalactic sources

A. W. Strong, A. W. Wolfendale, D. M. Worrall

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Abstract

An estimate is made of the fraction of the diffuse gamma-ray background originating in discrete sources rather than intergalactic space. It is shown that 'normal' galaxies probably contribute about 4% of the gamma-ray flux above 100 MeV. Radio galaxies can produce the bulk of the 1-10-MeV background if there is proportionality between their gamma-ray and radio luminosities. Seyfert galaxies and clusters can account for most of the 100-MeV observations if the X-ray and gamma-ray emissions are produced by the inverse Compton mechanism.

Original language	English
Pages (from-to)	1553-1566
Number of pages	14
Journal	Journal of Physics A: Mathematical and General
Volume	9
Publication status	Published - 1 Sep 1976

Keywords

Background Radiation
Diffuse Radiation
Extragalactic Radio Sources
Gamma Rays
Radio Galaxies
X Rays
Astronomical Models
Galactic Clusters
Luminous Intensity
Seyfert Galaxies
X Ray Spectra

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@article{f5aeec1009574d428d0ec039dfa434a9,

title = "Diffuse gamma rays from discrete extragalactic sources",

abstract = "An estimate is made of the fraction of the diffuse gamma-ray background originating in discrete sources rather than intergalactic space. It is shown that 'normal' galaxies probably contribute about 4% of the gamma-ray flux above 100 MeV. Radio galaxies can produce the bulk of the 1-10-MeV background if there is proportionality between their gamma-ray and radio luminosities. Seyfert galaxies and clusters can account for most of the 100-MeV observations if the X-ray and gamma-ray emissions are produced by the inverse Compton mechanism.",

keywords = "Background Radiation, Diffuse Radiation, Extragalactic Radio Sources, Gamma Rays, Radio Galaxies, X Rays, Astronomical Models, Galactic Clusters, Luminous Intensity, Seyfert Galaxies, X Ray Spectra",

author = "Strong, {A. W.} and Wolfendale, {A. W.} and Worrall, {D. M.}",

year = "1976",

month = sep,

day = "1",

language = "English",

volume = "9",

pages = "1553--1566",

journal = "Journal of Physics A: Mathematical and General",

issn = "0305-4470",

publisher = "IOP Publishing",

}

TY - JOUR

T1 - Diffuse gamma rays from discrete extragalactic sources

AU - Strong, A. W.

AU - Wolfendale, A. W.

AU - Worrall, D. M.

PY - 1976/9/1

Y1 - 1976/9/1

N2 - An estimate is made of the fraction of the diffuse gamma-ray background originating in discrete sources rather than intergalactic space. It is shown that 'normal' galaxies probably contribute about 4% of the gamma-ray flux above 100 MeV. Radio galaxies can produce the bulk of the 1-10-MeV background if there is proportionality between their gamma-ray and radio luminosities. Seyfert galaxies and clusters can account for most of the 100-MeV observations if the X-ray and gamma-ray emissions are produced by the inverse Compton mechanism.

AB - An estimate is made of the fraction of the diffuse gamma-ray background originating in discrete sources rather than intergalactic space. It is shown that 'normal' galaxies probably contribute about 4% of the gamma-ray flux above 100 MeV. Radio galaxies can produce the bulk of the 1-10-MeV background if there is proportionality between their gamma-ray and radio luminosities. Seyfert galaxies and clusters can account for most of the 100-MeV observations if the X-ray and gamma-ray emissions are produced by the inverse Compton mechanism.

KW - Background Radiation

KW - Diffuse Radiation

KW - Extragalactic Radio Sources

KW - Gamma Rays

KW - Radio Galaxies

KW - X Rays

KW - Astronomical Models

KW - Galactic Clusters

KW - Luminous Intensity

KW - Seyfert Galaxies

KW - X Ray Spectra

M3 - Article (Academic Journal)

VL - 9

SP - 1553

EP - 1566

JO - Journal of Physics A: Mathematical and General

JF - Journal of Physics A: Mathematical and General

SN - 0305-4470

ER -

Diffuse gamma rays from discrete extragalactic sources

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Keywords

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