Astrofísicas: Rayos gamma

  • Publicación
    The Optical/IR Counterpart of the 1998 July 3 Gamma-Ray Burst and Its Evolution
    We imaged the X-ray error box of GRB 980703, beginning 22.5 hr after the gamma-ray event, in both the optical R and near-infrared H bands. A fading optical/IR...
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    The Rapid Decay of the Optical Emission from GRB 980326 and Its Possible Implications
    We report the discovery of the optical counterpart to GRB 980326. Its rapid optical decay can be characterized by a power law with exponent - 2.10+/-0.13 and a...
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    The Redshift of the BL Lac Object TXS 0506+056
    The bright BL Lac object TXS 0506+056 is the most likely counterpart of the IceCube neutrino event EHE 170922A. The lack of this redshift prevents a...
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    The simultaneous low state spectral energy distribution of 1ES 2344+514 from radio to very high energies
    Context. BL Lacertae objects are variable at all energy bands on time scales down to minutes. To construct and interpret their spectral energy distribution (SED...
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    The TRAPUM L-band survey for pulsars in Fermi-LAT gamma-ray sources
    More than 100 millisecond pulsars (MSPs) have been discovered in radio observations of gamma-ray sources detected by the Fermi Large Area Telescope (LAT), but...
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    The Very Red Afterglow of GRB 000418: Further Evidence for Dust Extinction in a Gamma-Ray Burst Host Galaxy
    We report near-infrared and optical follow-up observations of the afterglow of the GRB 000418 starting 2.5 days after the occurrence of the burst and extending...
  • Publicación
    Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020
    The BL Lacertae object VER J0521+211 underwent a notable flaring episode in February 2020. A short-term monitoring campaign, led by the MAGIC (Major Atmospheric...
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    Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010
    Context. Because of its proximity, Mrk 421 is one of the best sources on which to study the nature of BL Lac objects. Its proximity allows us to characterize...
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    Upper Limit for γ-Ray Emission above 140 GeV from the Dwarf Spheroidal Galaxy Draco
    The nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of the most auspicious targets for indirect dark matter (DM) searches...