Blazar Nuclei in Radio-Loud Narrow-Line Seyfert 1 ?

  title={Blazar Nuclei in Radio-Loud Narrow-Line Seyfert 1 ?},
  author={Luigi Foschini and Laura Maraschi and Fabrizio Tavecchio and Gabriele Ghisellini and Mario Gliozzi and Rita M. Sambruna},
  journal={Advances in Space Research},
It has been suggested that some radio-loud narrow-line Seyfert 1 contain relativistic jets, on the basis of their flat-spectrum radio nuclei and studies on variability. We present preliminary results of an ongoing investigation of the X-ray and multiwavelength properties of 5 radio-loud NLS1 based on archival data from Swift and XMM-Newton. Some sources present interesting characteristics, very uncharacteristic for a radio-quiet narrow-line Seyfert 1, such as very hard X-ray spectra, and… Expand

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