Astrofísicas: Rayos gamma

  • Charla
    Gamma-ray bursts as a tool to unveil obscured star-forming galaxies
    Long Gamma-Ray Bursts are flashes of high-energy radiation and are linked to the death of massive stars. I will first summarize the main aspects of GRB...
  • Publicación
    Gamma-ray Excess from a Stacked Sample of High- and Intermediate-frequency Peaked Blazars Observed with the MAGIC Telescope
    Between 2004 and 2009, a sample of 28 X-ray selected high- and intermediate-frequency peaked blazars with an X-ray flux larger than 2 μJy at 1 keV in the...
  • Publicación
    Gamma-ray flaring activity of NGC1275 in 2016-2017 measured by MAGIC
    We report on the detection of flaring activity from the Fanaroff-Riley I radio galaxy NGC 1275 in very-high-energy (VHE, E > 100 GeV) gamma rays with the Major...
  • Publicación
    Gamma-ray line emission from OB associations and young open clusters. I. Evolutionary synthesis models
    We have developed a new diagnostic tool for the study of gamma-ray emission lines from radioactive isotopes (such as 26Al and 60Fe) in conjunction with other...
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    Gamma-ray observations of MAXI J1820+070 during the 2018 outburst
    MAXI J1820+070 is a low-mass X-ray binary with a black hole (BH) as a compact object. This binary underwent an exceptionally bright X-ray outburst from 2018...
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    Gamma-ray observations of the Crab Nebula at TeV energies
    A new series of observation of the Crab Nebula in TeV gamma rays using an improved camera on the Whipple Observatory 10 m Optical Reflector is reported. The...
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    Gas and dust properties in the afterglow spectra of GRB 050730
    We present early WHT ISIS optical spectroscopy of the afterglow of gamma-ray burst GRB 050730. The spectrum shows a DLA system with the highest measured...
  • Publicación
    GRB 011121: A Collimated Outflow into Wind-blown Surroundings
    We report optical and near-infrared follow-up observations of GRB 011121 collected predominantly at ESO telescopes in Chile. We discover a break in the...
  • Publicación
    GRB 050713A: High-Energy Observations of the Gamma-Ray Burst Prompt and Afterglow Emission
    Swift discovered GRB 050713A and slewed promptly to begin observing with its narrow-field instruments 72.6 s after the burst onset, while the prompt gamma-ray...