Astrophysical: Galaxies

  • Publication
    Multi-year characterisation of the broad-band emission from the intermittent extreme BL Lac 1ES 2344+514
    Aims: The BL Lac 1ES 2344+514 is known for temporary extreme properties characterised by a shift of the synchrotron spectral energy distribution (SED) peak...
  • Publication
    Multiband Analysis of a Sample of Blue Compact Dwarf Galaxies. I. Surface Brightness Distribution, Morphology, and Structural Parameters
    Broadband observations in B, V, R, and I have been performed for a sample of 28 galaxies cataloged as blue compact dwarf galaxies (BCDs). Our deep imaging...
  • Publication
    Multiband Analysis of a Sample of Blue Compact Dwarf Galaxies. II. Spatially Resolved and Integrated Photometry
    This is the second in a series of papers devoted to the study of a sample of 28 blue compact dwarf galaxies (BCDs). In the first paper, we presented the...
  • Publication
    Multiband optical variability of the TeV blazar PG 1553 + 113 in 2019
    We report the flux and spectral variability of PG 1553 + 113 on intra-night (IDV) to short-term time-scales using BVRI data collected over 91 nights from 28...
  • Publication
    Multiepoch Multiwavelength Spectra and Models for Blazar 3C 279
    Of the blazars detected by EGRET in GeV γ-rays, 3C 279 is not only the best observed by EGRET but also one of the best monitored at lower frequencies. We have...
  • Publication
    Multifrequency Analysis of the New Wide-Separation Gravitational Lens Candidate RX J0921+4529
    We report the discovery of a new two-image gravitational lens candidate. The system RX J0921+4529 contains two zs=1.66 quasars separated by 6.93" with an H-band...
  • Publication
    Multifrequency spectral analysis of extragalactic radio sources in the 33-GHz VSA catalogue: sources with flattening and upturn spectrum
    We present an analysis of the spectral properties of the extragalactic radio sources in the nearly complete Very Small Array (VSA) sample at 33GHz. Data from...
  • Publication
    Multifrequency studies of galaxies and groups. I. Environmental effect on galaxy stellar mass and morphology
    Context. To understand the role of the environment in galaxy formation, evolution, and present-day properties, it is essential to study the multifrequency...
  • Publication
    Multifrequency Studies of the Peculiar Quasar 4C +21.35 during the 2010 Flaring Activity
    The discovery of rapidly variable Very High Energy (VHE; E > 100 GeV) γ-ray emission from 4C +21.35 (PKS 1222+216) by MAGIC on 2010 June 17, triggered by the...