Multiwaveband Observations of Quasars with Flat Radio Spectra and Strong Millimeter Emission

Abstract

We present multiwaveband observations of a well selected sample of 28 quasars and two radio galaxies with flat radio spectra and strong millimeter wave emission (referred to here as FSRQ's). The observations include multifrequency VLBI measurements, X-ray observations with ROSAT and submillimeter observations with the JCMT. Particularly interesting among many findings is a correlation between the X-ray to millimeter spectral index and fraction of flux density contained in the VLBI core. This tendency toward higher X-ray fluxes from sources with stronger jet emission implies that the knots in the jet are the prominent source of X-rays.

arXiv comment38 pages, 17 figures, 12 tables, accepted for publication in Ap J Suppl, May 1999

References in corpus (2)

• On the soft X-ray spectra of gamma-loud blazars
• Rosat, Asca and Osse Observations of the Broad Line Radio Galaxy 3C120

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