ar X iv : a st ro - p h / 04 12 49 6 v 1 1 7 D ec 2 00 4 Is the Radio Core of BL Lac Precessing ?

ar X iv : a st ro - p h / 01 12 42 3 v 1 1 8 D ec 2 00 1 The black hole mass of BL Lacs from stellar velocity dispersion of the host galaxy

The black hole mass of BL Lacs from stellar velocity dispersion of the host galaxy.

ar X iv : a st ro - p h / 06 12 37 8 v 1 1 4 D ec 2 00 6 Magnetic fields , strings and cosmology

ar X iv : a st ro - p h / 04 12 37 4 v 1 1 5 D ec 2 00 4 Infrared emission in radio galaxy NGC 4261

We have analyzed the total and nuclear SED for NGC 4261 and find that the dominant process for the mid-and far-infrared emission in this object is non-thermal emission from the active nucleus. Modeling the emission from the optically detected 300 pc dust disk yields no significant disk contribution at any wavelength. To explain the observations, either the disk has an inflated inner region whic...

ar X iv : a st ro - p h / 06 12 42 6 v 1 1 5 D ec 2 00 6 Heating and Cooling in the Perseus Cluster Core

ar X iv : a st ro - p h / 97 05 17 9 v 1 2 2 M ay 1 99 7 Discovery of an Optical Jet in the BL Lac Object 3 C 371

We have detected an optical jet in the BL Lac object 3C 371 that coincides with the radio jet in this object in the central few kpc. The most notable feature is a bright optical knot 3 ′′ (4 kpc) from the nucleus that occurs at the location where the jet apparently changes its direction by ∼ 30 •. The radio, near-infrared and optical observations of this knot are consistent with a single power-...