Journal: Astronomy and Astrophysics

  • Publication
    X-ray monitoring of optical novae in M 31 from July 2004 to February 2005
    Context: Optical novae have recently been identified as the major class of supersoft X-ray sources in M 31 based on ROSAT and early XMM-Newton and Chandra...
  • Publication
    X-ray properties of the white dwarf pulsar eRASSU J191213.9−441044
    We report X-ray observations of the newly discovered pulsating white dwarf eRASSU J191213.9−441044 with Spectrum Roentgen Gamma and eROSITA (SRG/eROSITA) and...
  • Publication
    X-ray spectral evolution of SAX J1747.0-2853 during outburst activity and confirmation of its transient nature
    SAX J1747.0-2853 is an X-ray transient which exhibited X-ray outbursts yearly between 1998 and 2001, and most probably also in 1976. The outburst of 2000 was...
  • Publication
    X-ray spectral properties of active galactic nuclei in the Chandra Deep Field South
    We present a detailed X-ray spectral analysis of the sources in the 1Ms catalog of the Chandra Deep Field South (CDFS) taking advantage of optical spectroscopy...
  • Publication
    X-ray spectral variability of LINERs selected from the Palomar sample
    Context. Variability is a general property of active galactic nuclei (AGN). The way in which these changes occur at X-rays is not yet clearly understood. In the...
  • Publication
    X-ray spectral variability of seven LINER nuclei with XMM-Newton and Chandra data
    Context. One of the most distinctive features in active galactic nuclei (AGN) is the variability of their emission. Variability has been discovered at X-ray, UV...
  • Publication
    X-ray variability of 104 active galactic nuclei. XMM-Newton power-spectrum density profiles
    Context. Active galactic nuclei (AGN), powered by accretion onto supermassive black holes (SMBHs), are thought to be scaled up versions of Galactic black hole X...
  • Publication
    X-Shooting ULLYSES: Massive stars at low metallicity. I. Project description
    Observations of individual massive stars, super-luminous supernovae, gamma-ray bursts, and gravitational wave events involving spectacular black hole mergers...
  • Publication
    X-Shooting ULLYSES: Massive stars at low metallicity. II. DR1: Advanced optical data products for the Magellanic Clouds
    Context. The XShootU project aims to obtain ground-based optical to near-infrared spectroscopy of all targets observed by the Hubble Space Telescope (HST) under...