The appearance of active galactic nuclei (AGN) depends so strongly on orientation that our
current classification schemes are dominated by random pointing directions instead of more …

We have used narrow emission-line data from the new 7C Redshift Survey to investigate
correlations between the narrow-line luminosities and the radio properties of radio galaxies …

Recent mid-infrared (MIR) interferometric observations have shown that in a few active
galactic nuclei (AGNs) the bulk of the infrared emission originates from the polar region …

Subarcsecond images, taken in B, R, and H α filters, and area spectroscopy obtained with
the WIYN 3.5 m telescope provide the basis for an investigation of the unusual structures in …

We present new, high dynamic range VLA images of the inner jet of the closest radio galaxy,
Centaurus A. Over a 10 yr baseline we detect apparent subluminal motions (v∼ 0.5c) in the …

At a distance of 3.4 Mpc, NGC 5128 (Centaurus A) is by far the nearest active radio galaxy. It
is often considered to be the prototype Fanaroff-Riley Class I 'low-luminosity'radio galaxy …

Recent reliable measurements of the weak lines of [O III] λ4363, He IIλ4686 and [Ne V]
λ3426 seen in emission in extended and nuclear regions of AGN (Storchi-Bergmann et al …

In this Letter, we present for the first time images and kinematics of neutral hydrogen, which
is unambiguously associated with the optical shells of an E/S0 galaxy, NGC 5128. Using the …

Supermassive black holes and supernova explosions at the centres of active galaxies power
cycles of outflowing and inflowing gas that affect galactic evolution and the overall structure …

We propose a model for relativistic beam formation in active galactic nuclei, in which
electrons and positrons are generated by pair cascade on the UV photons of the accretion …