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X-rays from the jet in 3C 273: clues from the radio-optical spectra

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arxiv astro-ph/0202428 v1 pith:2QBHVS4J submitted 2002-02-22 astro-ph

classification astro-ph
keywords emissionexcessx-raysaboveaccountingc273cluescommon
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Using new deep VLA and HST observations of the large-scale jet in 3C273 matched to 0.3" resolution, we have detected excess near-ultraviolet emission (300 nm) above a synchrotron cutoff spectrum accounting for the emission from radio through optical (3.6 cm - 620 nm). This necessitates a two-component model for the emission. The radio-optical-X-ray spectral energy distributions suggest a common origin for the UV excess and the X-rays from the jet.

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Cited by 1 Pith paper

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    astro-ph.GA 2026-08 conditional novelty 6.0 of 10

    The team confirmed 39 new high-redshift radio quasars and found that the number of X-ray-selected blazars at z>4 grows with redshift faster than a constant X-ray/radio ratio model, in broad agreement with the IC/CMB model.

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