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dc.contributor.authorTreichel, K.en_US
dc.contributor.authorRudnick, L.en_US
dc.contributor.authorHardcastle, M.J.en_US
dc.contributor.authorLeahy, J.P.en_US
dc.date.accessioned2007-07-09T15:29:20Z
dc.date.available2007-07-09T15:29:20Z
dc.date.issued2001-11en_US
dc.identifier.citationAstrophysical Journal 561 pp.691-702en_US
dc.identifier.issn0004-637X (print)en_US
dc.identifier.issn1538-4357 (electronic)en
dc.identifier.other100788en_US
dc.identifier.urihttp://hdl.handle.net/2299/205
dc.descriptionOriginal article can be found at :--http://www.journals.uchicago.edu/ Copyright The American Astronomical Societyen
dc.description.abstractUsing spectral tomography to separate overlapping spectral features in a sample of FR II radio galaxies, we Ðnd a variety of spatial/spectral features that are not easily described in the context of current models. In particular, we Ðnd mixtures of Ñat- and steep-spectrum features in the hot spot regions and nonmonotonic spectral index gradients along jets. Additional Ðndings include spectral gradients in compact hot spots and possible transitions in jet properties at the downstream ends of the di use lobes. The complexity of behaviors uncovered here points to the need for a thorough investigation of numerical models for radio galaxies, as well as for detailed observational studies of larger, unbiased samples. We also perform the Ðrst quantitative assessment of errors in the use of spectral tomography for spectral index measurements.en
dc.format.extent645288 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherUniversity of Chicago Press/ American Astronomical Societyen_US
dc.typeArticleen_US
herts.preservation.rarelyaccessedtrue


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