Astrophysical: Galaxies

  • Publication
    X-ray analysis of Abell 2634 and its central galaxy 3C 465.
    An analysis of a ROSAT/PSPC observation of the galaxy cluster A2634 is presented. The cluster has a luminosity of 7.9+/-0.1x10^43^erg/s in the ROSAT band (0.1-2...
  • Publication
    X-ray binary accretion states in active galactic nuclei? Sensing the accretion disc of supermassive black holes with mid-infrared nebular lines
    Accretion states, which are universally observed in stellar mass black holes in X-ray binaries, might be expected in active galactic nuclei (AGN). This is the...
  • Publication
    X-ray bubbles in the circumgalactic medium of TNG50 Milky Way- and M31-like galaxies: signposts of supermassive black hole activity
    The TNG50 cosmological simulation produces X-ray emitting bubbles, shells, and cavities in the circumgalactic gas above and below the stellar discs of Milky Way...
  • Publication
    X-ray emission from RX J1720.1+2638 and Abell 267: A comparison between a fossil and a non-fossil system
    We present the XMM-Newton X-ray analysis of RX J1720.1+2638 and Abell 267, a non-fossil and a fossil system, respectively. The whole spectrum of both objects...
  • Publication
    X-ray long-term variations in the low-luminosity AGN NGC 835 and its circumnuclear emission
    Context. Obscured active galactic nuclei (AGNs) are thought to be very common in the Universe. Observations and surveys have shown that the number of sources...
  • Publication
    X-ray luminosity functions of different morphological and X-ray type AGN populations
    Luminosity functions are one of the most important observational clues when studying galaxy evolution over cosmic time. In this paper we present the X-ray...
  • Publication
    X-ray monitoring of classical novae in the central region of M 31. I. June 2006-March 2007
    Context. Classical novae (CNe) have recently been reported to represent the major class of supersoft X-ray sources (SSSs) in the central region of our neighbour...
  • 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 Nuclear Activity in S4G Barred Galaxies: No Link between Bar Strength and Co-occurrent Supermassive Black Hole Fueling
    Stellar bars can lead to gas inflow toward the center of a galaxy and stimulate nuclear star formation. However, there is no compelling evidence on whether they...