Astrofísicas: Rayos gamma

  • Publicación
    GRB 050904 at redshift 6.3: observations of the oldest cosmic explosion after the Big Bang
    We present optical and near-infrared observations of the afterglow of the gamma-ray burst GRB 050904. We derive a photometric redshift z = 6.3, estimated from...
  • Publicación
    GRB 051028: an intrinsically faint gamma-ray burst at high redshift?
    Aims.We present multiwavelength observations of the gamma-ray burst GRB 051028 detected by HETE-2 in order to derive its afterglow emission parameters and to...
  • Publicación
    GRB 060121: Implications of a Short-/Intermediate-Duration γ-Ray Burst at High Redshift
    Since the discovery of the first short-population γ-ray burst (GRB) afterglows in 2005, the handful of observed events have been found to be embedded in nearby...
  • Publicación
    GRB 060605: multi-wavelength analysis of the first GRB observed using integral field spectroscopy
    The long and relatively faint gamma-ray burst GRB 060605 detected by Swift/BAT lasted about 20 s. Its afterglow could be observed with Swift/XRT for nearly 1...
  • Publicación
    GRB 080913 at Redshift 6.7
    We report on the detection by Swift of GRB 080913, and subsequent optical/near-infrared follow-up observations by GROND, which led to the discovery of its...
  • Charla
    GRB in the High Energy and Very High Energy regime
    Gamma Ray Bursts (GRBs) are among the most energetic transient phenomena frequently followed up by different observatories and yet several fundamental questions...
  • Publicación
    GRB010222: Afterglow emission from a rapidly decelerating shock
    The GRB010222 optical and near-infrared (NIR) afterglow was monitored at the TNG and other Italian telescopes starting ~ 1 day after the high-energy prompt...
  • Publicación
    Insights into the broadband emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements
    Aims: We present the first multiwavelength study of Mrk 501 that contains simultaneous very-high-energy (VHE) γ-ray observations and X-ray polarization...
  • Publicación
    Insights into the emission of the blazar 1ES 1011+496 through unprecedented broadband observations during 2011 and 2012
    Context. 1ES 1011+496 (z = 0.212) was discovered in very high-energy (VHE, E> 100 GeV) γ rays with MAGIC in 2007. The absence of simultaneous data at lower...