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

S. D. Bloom·A. P. Marscher·E. M. Moore·W. K. Gear·H. Terasranta·E. Valtaoja·H. D. Aller·M. F. Aller
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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.

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S. D. Bloom, A. P. Marscher, E. M. Moore, W. K. Gear, H. Terasranta, E. Valtaoja, H. D. Aller, M. F. Aller. 1998-12-04. Multiwaveband Observations of Quasars with Flat Radio Spectra and Strong Millimeter Emission. https://doi.org/10.1086/313204

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