Astrophysical: Blazars

  • Publication
    Recent outburst in Markarian 421.
    The authors present preliminary results of optical and infrared observations of Mk 421, during an outburst. Some of these observations are simultaneous in both...
  • Publication
    Simultaneous UBVRI photopolarimetric observations of blazars. II
    Results are presented from simultaneous UBVRI photopolarimetric observations of eight blazars at the 2.56-m Nordic Optical Telescope during winter 1991. In 3C...
  • Publication
    Spectropolarimetric observations of OJ 287 during outburst.
    Not Available
  • Publication
    The broad band energy distribution of the misaligned gamma-ray blazar PKS 0521-365
    Simultaneous UV and X-ray observations of the blazar PKS 0521-365 are combined with radio, IR, optical and gamma-ray data taken at different epochs to study the...
  • Publication
    The connection between the low polarization quasar 3C 273 and blazars
    Photopolarimetric observations in UBVRI bands and near-infrared photometric observations of the low polarization quasar 3C 273 obtained between February 1989...
  • Publication
    The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope: Data Release 3
    An incremental version of the fourth catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area Telescope is presented. This version (4LAC-DR3)...
  • News
    The Gran Telescopio Canarias finds the farthest black hole that belongs to a rare family of galaxies
    An international team of astronomers has identified one of the rarest known classes of gamma-ray emitting galaxies, called BL Lacertae, within the first 2...
  • Publication
    The light curve of 3C 66A.
    During the OJ-94 campaign one monitored the blazar 3C 66A as a secondary target. Here the authors present the observed V-band light curve. This blazar was in...
  • Publication
    The light curve of OJ 287.
    During the OJ-94 campaign for the blazar OJ 287 the authors have obtained the best ever observed optical light curve for any extragalactic object. They have...