Astrophysical: Gamma rays

  • Publication
    Multi-wavelength observations of the GRB 080319B afterglow and the modeling constraints
    Context: We present observations of the GRB 080319B afterglow at optical, mm, and radio frequencies between a few hours and 67 days after the burst. Aims: We...
  • 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 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...
  • Publication
    Multiwavelength (Radio, X-Ray, and γ-Ray) Observations of the γ-Ray Binary LS I +61 303
    We present the results of the first multiwavelength observing campaign on the high-mass X-ray binary LS I +61 303, comprising observations at the TeV regime...
  • 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 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 Study of Quiescent States of Mrk 421 with Unprecedented Hard X-Ray Coverage Provided by NuSTAR in 2013
    We present coordinated multiwavelength observations of the bright, nearby BL Lacertae object Mrk 421 taken in 2013 January–March, involving GASP-WEBT, Swift...
  • Publication
    Multiwavelength study of the galactic PeVatron candidate LHAASO J2108+5157
    Context. Several new ultrahigh-energy (UHE) γ-ray sources have recently been discovered by the Large High Altitude Air Shower Observatory (LHAASO) collaboration...