Astrophysical: Accretion

  • Publication
    Simultaneous X-ray and optical spectroscopy of V404 Cygni supports the multi-phase nature of X-ray binary accretion disc winds
    Observational signatures of accretion disc winds have been found in a significant number of low-mass X-ray binaries at either X-ray or optical wavelengths. The...
  • Publication
    Six years of BeppoSAX Wide Field Cameras observations of nine galactic type I X-ray bursters
    We present an overview of BeppoSAX Wide Field Cameras observations of the nine most frequent type I X-ray bursters in the Galactic center region. Six years of...
  • Publication
    Soft X-ray emission lines in the X-ray binary Swift J1858.6-0814 observed with XMM-Newton Reflection Grating Spectrometer: disc atmosphere or wind?
    We find soft X-ray emission lines from the X-ray binary Swift J1858.6-0814 in data from XMM-NewtonReflection Grating Spectrometer (RGS): N VII, O VII, and O...
  • Publication
    Soft X-ray transient light curves as standard candles: exponential versus linear decays
    A recent paper by King & Ritter proposed that the light curves of soft X-ray transients (SXTs) are dominated by the effect of irradiation of the accretion disc...
  • Publication
    Soft-state optical spectroscopy of the black hole MAXI J1305-704
    The X-ray dipper MAXI J1305-704 is a dynamically confirmed black hole (BH) X-ray binary discovered a decade ago. While its only outburst has been studied in...
  • Publication
    Space Telescope and Optical Reverberation Mapping Project.VI. Reverberating Disk Models for NGC 5548
    We conduct a multiwavelength continuum variability study of the Seyfert 1 galaxy NGC 5548 to investigate the temperature structure of its accretion disk. The 19...
  • Publication
    Spectral and timing evolution of the bright failed outburst of the transient black hole Swift J174510.8-262411
    We studied time variability and spectral evolution of the Galactic black hole transient Swift J174510.8-262411 during the first phase of its outburst. INTEGRAL...
  • Publication
    Spectral and timing evolution of the bright failed outburst of the transient black hole Swift J174510.8-262411
    We studied time variability and spectral evolution of the Galactic black hole transient Swift J174510.8-262411 during the first phase of its outburst. INTEGRAL...
  • Publication
    Spectral microvariability in Quasars
    Optical microvariability (OM, small amplitude variations in time scales from minutes to hours) in radio-quiet quasars (RQQ) may be as frequent as in radio-loud...