A further step in the understanfing of Radio-Loud Narrow-line Seyfert 1

Details A further step in the understanfing of Radio-Loud Narrow-line Seyfert 1 A further step in the understanfing of Radio-Loud Narrow-line Seyfert 1

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..180p&link_type=abstract

XMM-Newton Proposal ID #06743203

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, J1548+3511

Scientific paper

The fraction of radio-loud (RL) objects in the narrow-line Seyfert 1s (NLSy1) population is very small. RL NLSy1 exhibit typical features of blazars in radio: the extreme cases have been recently detected in gamma-ray. Only few RL NLSy1s are characterized in X-ray to date, and it is not clear whether their X-ray spectra are dominated by the jet contribution or not. Here we propose to obtain the quasi-simultaneous radio/optical/X-ray/gamma-ray spectrum of a sample of 4 very RL (R>100) NLSy1s for a total observing time of 180 ksec. These sources were selected according their radio loudness and their radio spectral index. Recognizing our targets as blazar-like will support the hypothesis that they represent a new class of blazars instead of the low-power tail of RL AGNs.

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