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dc.contributor.author
Testori, Juan Carlos
dc.contributor.author
Reich, Patricia
dc.contributor.author
Reich, Wolfgang
dc.date.available
2017-12-05T16:50:15Z
dc.date.issued
2004-12
dc.identifier.citation
Testori, Juan Carlos; Reich, Patricia; Reich, Wolfgang; Spectral index variations of galactic emission; Copernicus GmbH, Katlenburg-Lindau; Proceedings of the Magnetized Interstellar Medium; 1; 12-2004; 63-68
dc.identifier.uri
http://hdl.handle.net/11336/29732
dc.description.abstract
We have used all-sky maps at 45 MHz, 408 MHz, 1420 MHz and 22.8 GHz to calculate the distribution of spectral indices across the sky. This requires an adjustment of the adopted zero-levels of the different surveys, which was performed by temperature-versus-temperature (TT) plots. While at high frequencies a spectral steepening with increasing Galactic latitude is seen in the same way as it is observed in nearby galaxies seen edge-on, the spectral index distribution is more complex at lower frequencies. In general there is an agreement with the cooling-convection halo models by Lerche & Schlickeiser (1982), but also local magnetic field variations and variations of the cosmic-ray electron energy spectrum may explain the distribution of low-frequency spectral indices.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Copernicus GmbH, Katlenburg-Lindau
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Galactic Emission
dc.subject
Spectral Index
dc.subject
Surveys
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Spectral index variations of galactic emission
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-11-03T19:33:51Z
dc.journal.volume
1
dc.journal.pagination
63-68
dc.description.fil
Fil: Testori, Juan Carlos. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
dc.description.fil
Fil: Reich, Patricia. Max Planck Institut für Radioastronomie; Alemania
dc.description.fil
Fil: Reich, Wolfgang. Max Planck Institut für Radioastronomie; Alemania
dc.journal.title
Proceedings of the Magnetized Interstellar Medium
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2004mim..proc...63R
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://articles.adsabs.harvard.edu/full/2004mim..proc...63R
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