Astrofísicas: Rayos gamma

  • Publicación
    First Bounds on the High-Energy Emission from Isolated Wolf-Rayet Binary Systems
    High-energy gamma-ray emission is theoretically expected to arise in tight binary star systems (with high mass loss and high-velocity winds), although the...
  • Publicación
    First Bounds on the Very High Energy γ-Ray Emission from Arp 220
    Using the Major Atmospheric Gamma Imaging Cerenkov Telescope (MAGIC), we have observed the nearest ultraluminous infrared galaxy, Arp 220, for about 15 hr. No...
  • Publicación
    First broadband characterization and redshift determination of the VHE blazar MAGIC J2001+439
    Aims: We aim to characterize the broadband emission from 2FGL J2001.1+4352, which has been associated with the unknown-redshift blazar MG4 J200112+4352. Based...
  • Publicación
    First characterization of the emission behavior of Mrk 421 from radio to very high-energy gamma rays with simultaneous X-ray polarization measurements
    Aims: We have performed the first broadband study of Mrk 421 from radio to TeV gamma rays with simultaneous measurements of the X-ray polarization from IXPE...
  • Publicación
    First multi-wavelength campaign on the gamma-ray-loud active galaxy IC 310
    Context. The extragalactic very-high-energy gamma-ray sky is rich in blazars. These are jetted active galactic nuclei that are viewed at a small angle to the...
  • Publicación
    First observations of the X-ray transient EXO 2030+375 with IBIS/ISGRI
    We present a first INTEGRAL observation of the 42 s transient X-ray pulsar EXO 2030+375 with IBIS/ISGRI. The source was detected during Cyg X-1 observations in...
  • Publicación
    Flux Upper Limit on Gamma-Ray Emission by GRB 050713a from MAGIC Telescope Observations
    The long-duration γ-ray burst GRB 050713a was observed by the MAGIC Telescope 40 s after the burst onset and followed up for 37 minutes, until twilight. The...
  • Publicación
    Galactic Populations of Radio and Gamma-Ray Pulsars in the Polar Cap Model
    We simulate the characteristics of the Galactic population of radio and γ-ray pulsars using Monte Carlo techniques. At birth, neutron stars are spatially...
  • Charla
    Gamma rays from Young Stellar Objects
    In the last years star-forming regions and massive protostars have been suggested to be gamma-ray emitters. Isolated massive protostars present powerful...