Astrophysical: Accretion

  • Publication
    The supergiant optical counterpart of ULX P13 in NGC 7793
    We have identified the optical counterpart of the ULX source P13 in the nearby spiral galaxy NGC 7793. The object is a V ˜ 20.5 mag star, ten times brighter...
  • Publication
    The ultraluminous X-ray source NGC 1313 X-2. Its optical counterpart and environment
    NGC 1313 X-2 is one of the brightest ultraluminous X-ray sources in the sky, at both X-ray and optical wavelengths; therefore, quite a few studies of available...
  • Publication
    The ULX NGC 1313 X-2: an Optical Study Revealing an Interesting Behavior
    We present a summary of our ongoing efforts to study one of the brightest ultraluminous X-ray source, NGC 1313 X-2. Despite a large coverage in the X-rays, much...
  • Publication
    The variable radio counterpart of Swift J1858.6-0814
    Swift J1858.6-0814 is a transient neutron star X-ray binary discovered in 2018 October. Multiwavelength follow-up observations across the electromagnetic...
  • Publication
    The very faint hard state of the persistent neutron star X-ray binary SLX 1737-282 near the Galactic Centre
    We report on a detailed study of the spectral and temporal properties of the neutron star low-mass X-ray binary SLX 1737-282, which is located only ∼1° away...
  • Publication
    The X-ray binary X2127+119 in M15: evidence for a very low mass, stripped-giant companion
    We present integral field spectroscopy of X2127+119, the luminous X-ray binary in the globular cluster M15, obtained with INTEGRAL/WYFFOS on the William...
  • Publication
    The X-Ray Properties of the Black Hole Transient MAXI J1659-152 in Quiescence
    We present new Chandra X-ray observations of the transient black hole X-ray binary MAXI J1659-152 in quiescence. These observations were made more than one year...
  • Publication
    The XMM-Newton/Chandra monitoring campaign of the Galactic center region. Description of the program and preliminary results
    We present the first results of our X-ray monitoring campaign on a 1.7 square degree region centered on Sgr A* using the satellites XMM-Newton and Chandra. The...
  • Publication
    The XMM-Newton/HST View of the Obscuring Outflow in the Seyfert Galaxy Mrk 335 Observed at Extremely Low X-Ray Flux
    The Seyfert galaxy Mrk 335 is known for its frequent changes of flux and spectral shape in the X-ray band that occurred during recent years. These variations...