Astrophysical: BL Lacertae objects

  • Publication
    Herschel-ATLAS: Blazars in the science demonstration phase field
    To investigate the poorly constrained sub-mm counts and spectral properties of blazars we searched for these in the Herschel-ATLAS (H-ATLAS) science...
  • Publication
    High zenith angle observations of PKS 2155-304 with the MAGIC-I telescope
    Context. The high frequency peaked BL Lac PKS 2155-304 with a redshift of z = 0.116 was discovered in 1997 in the very high energy (VHE, E > 100 GeV) γ-ray...
  • Publication
    High-redshift BL Lac Objects: Spectroscopy of Candidates
    We report on 16 BL Lacertae objects that were proposed to be at z > 1. We present spectroscopic observations secured at the 10.4 m GTC that allowed us to assess...
  • Publication
    HST Observations of Host Galaxies in Three Radio-selected BL Lacertae Objects
    We present high-resolution images of three BL Lac objects (0814+425, 1823+568, 2254+074) taken with the WFPC-2 camera on Hubble Space Telescope (HST) as part of...
  • Publication
    Hubble Space Telescope Observations of the Host Galaxies of BL Lacertae Objects
    Six BL Lac objects from the complete 1 Jy radio-selected sample of 34 objects were observed in cycle 5 with the Hubble Space Telescope (HST) Wide-Field...
  • Publication
    Hubble Space Telescope Observations of the Optical Jets of PKS 0521-365, 3C 371, and PKS 2201+044
    Hubble Space Telescope (HST) observations have led to the discovery of the optical counterpart of the radio jet of PKS 2201+044 and to a detailed analysis of...
  • Publication
    Infranight infrared spectral variability in OJ 287
    We present results from five nights of pseudo-simulations JHK infrared monitoring of the blazar OJ 287 taken with the Carlos Sanchez Telescope during March 1991...
  • Publication
    Infrared astronomy
    The physics of infrared emission processes is examined, taking into account black body radiation, radiation from dust particles, thermal plasma emission...
  • Publication
    Infrared properties of blazars: putting the GASP-WEBT sources into context
    The infrared properties of blazars can be studied from the statistical point of view with the help of sky surveys, like that provided by the Wide-field Infrared...