Tipo de publicación: Con árbitro

  • Publicación
    X-Shooting ULLYSES: Massive stars at low metallicity: V. Effect of metallicity on surface abundances of O stars
    Context. Massive stars rotate faster, on average, than lower mass stars. Stellar rotation triggers hydrodynamical instabilities which transport angular momentum...
  • Publicación
    XMM-Newton and Chandra measurements of the AGN intrinsic absorption: dependence on luminosity and redshift
    We combine bright XMM-Newton data with the Chandra Deep Field South observations to explore the behavior of the intrinsic AGN absorption, as a function of...
  • Publicación
    XMM-Newton and ESO observations of the two unidentified γ-ray sources 3EG J0616-3310 and 3EG J1249-8330
    The limited angular resolution of γ-ray telescopes prevents a direct identification of the majority of sources detected so far. This is particularly true for...
  • Publicación
    XMM-Newton detection of Nova Muscae 1991 in quiescence
    The soft X-ray transient GU Mus has been detected by XMM-Newton in the quiescent state. The source is very faint, with a 0.5-10.0 keV unabsorbed flux of =~ 1.1...
  • Publicación
    XMM-Newton observations of the Lockman Hole IV: spectra of the brightest AGN
    This paper presents the results of a detailed X-ray spectral analysis of a sample of 123 X-ray sources detected with XMM-Newton in the Lockman Hole field. This...
  • Publicación
    XMM-Newton observations of the Lockman Hole. III. A relativistic Fe line in the mean X-ray spectra of type-1 and type-2 AGN
    Using the 770 ks XMM-Newton survey of the Lockman Hole field in combination with extensive optical identifications of the AGN population, we derive an average...
  • Publicación
    XMM-Newton study of six massive, X-ray luminous galaxy cluster systems in the redshift range z = 0.25-0.5
    Massive galaxy clusters are interesting astrophysical and cosmological objects to study, but they are relatively rare. In the redshift range z = 0.25-0.5 which...
  • Publicación
    XMM-Newton-discovered Fast X-ray Transients: host galaxies and limits on contemporaneous detections of optical counterparts
    Extragalactic fast X-ray transients (FXTs) are a class of soft (0.3-10 keV) X-ray transients lasting a few hundred seconds to several hours. Several progenitor...
  • Publicación
    XMMU J134736.6+173403: an eclipsing LMXB in quiescence or a peculiar AGN?
    Aims:We report the discovery of a peculiar object observed serendipitously with XMM-Newton. We present its timing and spectral properties and investigate its...