The high energy spectrum of 3C 273

Production of the High Energy-momentum Spectra of Quasars 3c 279 and 3c 273 Using the Penrose Mechanism

Theoretical and numerical (Monte Carlo) N-particle computer model simulations show that Penrose Compton scattering (PCS) near the event horizon and Penrose pair production (PPP) at or near the photon orbit, in the ergosphere of a supermassive (M = 10M⊙) rotating black hole, can generate the necessary energy-momentum spectra to explain the origin of the mysterious fluxes of ultrarelativistic ele...

BeppoSAX observations of 3C 273

Time Variable Faraday Rotation Measures of 3c 273 & 3c 279

Multifrequency polarimetry with the VLBA confirms the previously reported timevarying Faraday rotation measure (RM) in the quasar 3C 279. Variability in the RM and electric vector position angle (EVPA) of the jet component (C4) is seen making it an unreliable absolute EVPA calibrator. 3C 273 is also shown to vary its RM structure on 1.5 year time-scales. Variation in the RM properties of quasar...

Variability of the Centimeter-submillimeter Spectrum and Polarization of 3c 273 during Outburst

Centimeter to submillimeter total Ñux and polarization monitoring data are used to investigate the nature of a prominent Ñare in the quasar 3C 273 during 1995/6. After removal of the quiescent level, the resulting ““ Ñare spectra ÏÏ are well Ðtted by a simple homogeneous synchrotron source model, which in turn allows the movement of the self-absorption turnover to be tracked during the Ñare. Bo...

The Global Jet Structure of the Archetypical Quasar 3C 273

A key question in the formation of the relativistic jets in active galactic nuclei (AGNs) is the collimation process of their energetic plasma flow launched from the central supermassive black hole (SMBH). Recent observations of nearby low-luminosity radio galaxies exhibit a clear picture of parabolic collimation inside the Bondi accretion radius. On the other hand, little is known of the obser...