Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· On-line Data
· References in the article
· Citations to the Article (197) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (23)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
EGRET Observations of Radio-bright Supernova Remnants
Authors:
Esposito, Joseph A.; Hunter, Stanley D.; Kanbach, Gottfried; Sreekumar, P.
Publication:
Astrophysical Journal v.461, p.820 (ApJ Homepage)
Publication Date:
04/1996
Origin:
APJ
ApJ Keywords:
GAMMA RAYS: OBSERVATIONS, ISM: SUPERNOVA REMNANTS, ISM: COSMIC RAYS, ACCELERATION OF PARTICLES, SHOCK WAVES
DOI:
10.1086/177104
Bibliographic Code:
1996ApJ...461..820E

Abstract

The gamma-ray emission associated with radio-bright supernova remnants has been studied using data from the EGRET instrument aboard the Compton Gamma Ray Observatory. Five sources from The Second EGRET Catalog of High-Energy Gamma-Ray Sources are shown to be coincident with supernova remnants. The two strongest pointlike gamma-ray excesses which are coincident with supernova remnants are 2EG J2020+4026 with y Cyg and 2EG J0618+2234 with IC 443. The gamma-ray flux, E > 100 MeV, from the region of these two supernova remnants is (12.6±0.7) x 10-7 photons cm-2 s-1 and (5.0±0.4) x 10-7 photons cm-2 s-1, respectively. The differential gamma-ray flux of both supernova remnants is consistent with a single power law, F ∝ E-α, with α = 2.07±0.05 and 1.97±0.07 for γ Cyg and IC 443, respectively. A cosmic-ray origin model based on shock acceleration of cosmic rays is consistent with our results suggesting supernova remnants as an acceleration site, and possibly the origin, of Galactic cosmic rays. Other mechanisms to explain the possible gamma-ray emission from supernova remnants are also discussed in the context of the EGRET observations.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
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