Change search
ReferencesLink to record
Permanent link

Direct link
Fermi Large Area Telescope Measurements of the Diffuse Gamma-Ray Emission at Intermediate Galactic Latitudes
Show others and affiliations
2009 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 103, no 25Article in journal (Refereed) Published
Abstract [en]

The diffuse galactic gamma-ray emission is produced by cosmic rays (CRs) interacting with the interstellar gas and radiation field. Measurements by the Energetic Gamma-Ray Experiment Telescope (EGRET) instrument on the Compton Gamma-Ray Observatory indicated excess gamma-ray emission greater than or similar to 1 GeV relative to diffuse galactic gamma-ray emission models consistent with directly measured CR spectra (the so-called "EGRET GeV excess"). The Large Area Telescope (LAT) instrument on the Fermi Gamma-Ray Space Telescope has measured the diffuse gamma-ray emission with improved sensitivity and resolution compared to EGRET. We report on LAT measurements for energies 100 MeV to 10 GeV and galactic latitudes 10 degrees <|b|< 20 degrees. The LAT spectrum for this region of the sky is well reproduced by a diffuse galactic gamma-ray emission model that is consistent with local CR spectra and inconsistent with the EGRET GeV excess.

Place, publisher, year, edition, pages
2009. Vol. 103, no 25
Keyword [en]
egret observations, spectra, galaxy
URN: urn:nbn:se:kth:diva-19069DOI: 10.1103/PhysRevLett.103.251101ISI: 000272958300005ScopusID: 2-s2.0-72449164032OAI: diva2:337116
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-02-16Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Ryde, FelixConrad, JanYlinen, Tomi
By organisation
Particle and Astroparticle Physics
In the same journal
Physical Review Letters

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 57 hits
ReferencesLink to record
Permanent link

Direct link