Padovani, PaoloPaoloPadovaniPerlman, EricEricPerlmanLandt, HermineHermineLandtGiommi, PaoloPaoloGiommiPerri, MatteoMatteoPerri2020-09-172020-09-172004-11-01https://hdl.handle.net/20.500.13025/205Astrophysics and Space Science, Volume 294, Issue 1-2, pp. 71-78We present a new population of radio quasars whose X-ray band, unlike previously known sources which have (flat) inverse Compton radiation, is characterized by (steep) synchrotron emission, with a broad-band spectral energy distribution similar to that of BL Lacs with high energy synchrotron peaks. We discuss how this new class was discovered, the class properties, and the implications of its existence for our understanding of jets and active galactic nuclei in general.BL Lacertae objects generalgalaxies activequasars generalradiation mechanisms nonthermalradio continuum galaxiesX-rays galaxies10.1007/s10509-004-4024-4http://adsabs.harvard.edu/abs/2004Ap&SS.294...71P2004Ap&SS.294...71P