Astrophysical: Quasars

  • Talk
    Multiply-imaged Quasars: Time Delays and Hubble Constant (3)
  • Publication
    Multiwavelength behaviour of the blazar 3C 279: decade-long study from γ-ray to radio
    We report the results of decade-long (2008-2018) γ-ray to 1 GHz radio monitoring of the blazar 3C 279, including GASP/WEBT, Fermi and Swift data, as well as...
  • Publication
    Multiwavelength behaviour of the blazar OJ 248 from radio to γ-rays
    We present an analysis of the multiwavelength behaviour of the blazar OJ 248 at z = 0.939 in the period 2006-2013. We use low-energy data (optical, near...
  • Publication
    Multiwavelength flare observations of the blazar S5 1803+784
    The radio, optical, and γ-ray light curves of the blazar S5 1803+784, from the beginning of the Fermi-Large Area Telescope (LAT) mission in 2008 August-2018...
  • Publication
    Multiwavelength Observations of a Dramatic High-Energy Flare in the Blazar 3C 279
    The blazar 3C 279, one of the brightest identified extragalactic objects in the gamma -ray sky, underwent a large (factor of ~10 in amplitude) flare in gamma...
  • Publication
    Multiwavelength observations of a VHE gamma-ray flare from PKS 1510-089 in 2015
    Context. PKS 1510-089 is one of only a few flat spectrum radio quasars detected in the very-high-energy (VHE, > 100 GeV) gamma-ray band. Aims: We study the...
  • Publication
    Multiwavelength observations of the extraordinary accretion event AT2021lwx
    We present observations from X-ray to mid-infrared wavelengths of the most energetic non-quasar transient ever observed, AT2021lwx. Our data show a single...
  • Publication
    Multiwavelength optical and NIR variability analysis of the Blazar PKS 0027-426
    We present multiwavelength spectral and temporal variability analysis of PKS 0027-426 using optical griz observations from Dark Energy Survey between 2013 and...
  • Publication
    Multiwavelength Properties of the X-Ray Sources in the Groth-Westphal Strip Field
    We summarize the multiwavelength properties of X-ray sources detected in the 80 ks XMM-Newton observation of the Groth-Westphal strip, a contiguous strip of 28...