Astrophysical: BL Lacertae objects

  • Publication
    Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase
    Context. The BL Lac object S5 0716+714, a highly variable blazar, underwent an impressive outburst in January 2015 (Phase A), followed by minor activity in...
  • 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 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
    Multifrequency-spectral behavior of the BL Lacertae objects OI 90.4 and 3C 66A
    Single-epoch multifrequency data for the BL Lac objects OI 90.4 and 3C 66A, spanning radio through ultraviolet wavelengths, are presented, as well as other...
  • Publication
    Multimessenger Characterization of Markarian 501 during Historically Low X-Ray and γ-Ray Activity
    We study the broadband emission of Mrk 501 using multiwavelength observations from 2017 to 2020 performed with a multitude of instruments, involving, among...
  • Publication
    Multiwavelength analysis of Fermi-LAT blazars with high-significance periodicity: detection of a long-term rising emission in PG 1553+113
    Blazars display variable emission across the entire electromagnetic spectrum, with time-scales that can range from a few minutes to several years. Our recent...
  • 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 Mrk 501 in 2008
    Context. Blazars are variable sources on various timescales over a broad energy range spanning from radio to very high energy (>100 GeV, hereafter VHE). Mrk 501...
  • Publication
    Multiwavelength Observations of the Blazar VER J0521+211 during an Elevated TeV Gamma-Ray State
    We report on a long-lasting, elevated gamma-ray flux state from VER J0521+211 observed by VERITAS, MAGIC, and Fermi-LAT in 2013 and 2014. The peak integral flux...