Active galactic nuclei with flat radio spectra exhibit significant variations of continuum flux
density on time scales of days or less throughout the entire wavelength range. These rapid …

The physical conditions in the γ-ray-emitting blazar 3C 279 are discussed. The requirement
of transparency for γ-rays, together with the observation of rapid variability, imply that the …

Approximate formulae for the instantaneous scattered radiation spectra are derived in the
Thomson and Klein-Nishina regimes, assuming that the relativistic electrons are described …

We present numerical simulations of axisymmetric, magnetically driven relativistic jets. Our
special-relativistic, ideal-magnetohydrodynamics numerical scheme is specifically designed …

Starting from the assumption that radio jets and accretion disks are symbiotic features
present in radio loud and radio quiet quasars we scale the bulk power of radio jets with the …

We discuss the implications of rapid (few-minute) variability in the TeV flux of blazars, which
has been observed recently with the HESS and MAGIC telescopes. The variability time …

We have derived simplified equations for a freely expanding, pressure driven jet model as a
function of jet power and applied it successfully to the radio cores in the black hole …

The EGRET detection of quasar 1633 + 382 ADS Classic is now deprecated. It will be
completely retired in October 2019. This page will automatically redirect to the new ADS …

We present results from a large 86 GHz global very long baseline interferometry (VLBI)
survey of compact radio sources. The main goal of the survey is to increase by factors of 3–5 …

We report on the &ggr;-ray variability of Mrk 421 at E &ggr;> 300 GeV during the 1995
season, and concentrate on the results of an intense multiwavelength observing campaign …