Astrofísicas: Acreción

  • Publicación
    State-dependent signatures of jets and winds in the optical and infrared spectrum of the black hole transient GX 339–4
    GX 339–4 is one of the prototypical black hole X-ray transients, exhibiting recurrent outbursts that allow detailed studies of black hole accretion and ejection...
  • Publicación
    Stellar mass fraction and quasar accretion disk size in SDSS J1004+4112 from photometric follow-up
    The gravitational lens SDSS J1004+4112 was the first discovered system where a background quasar is lensed by a galaxy cluster instead of a single galaxy. We...
  • Publicación
    Stellar Winds in Massive X-ray Binaries
    Strong winds from massive stars are a topic of interest to a wide range of astrophysical fields. In High-Mass X-ray Binaries the presence of an accreting...
  • Publicación
    Structure of the Accretion Disk in the Lensed Quasar Q2237+0305 from Multi-epoch and Multi-wavelength Narrowband Photometry
    We present estimates for the size and the logarithmic slope of the disk temperature profile of the lensed quasar Q2237+0305, independent of the component...
  • Publicación
    Studying the accretion geometry of EXO 2030+375 at luminosities close to the propeller regime
    The Be X-ray binary EXO 2030+375was in an extended low-luminosity state during most of 2016. We observed this state with NuSTARand Swift, supported by...
  • Publicación
    Sub-second infrared variability from the archetypal accreting neutron star 4U 1728-34
    We report on the first simultaneous high-time resolution X-ray and infrared (IR) observations of a neutron star low mass X-ray binary in its hard state. We...
  • Publicación
    Sub-second optical/near-infrared quasi-periodic oscillations from the black hole X-ray transient Swift J1727.8–1613
    We report on the detection of optical/near-infrared (O-IR) quasi-periodic oscillations (QPOs) from the black hole (BH) X-ray transient Swift J1727.8–1613. We...
  • Publicación
    Suzaku spectroscopy of the neutron star transient 4U 1608-52 during its outburst decay.
    We test the proposed three-component spectral model for neutron star low-mass X-ray binaries using broad-band X-ray data. We have analysed four X-ray spectra (0...
  • Publicación
    Swift and SALT observations of the multiple outbursts of MAXI J1957+032
    The new recurrent X-ray transient MAXI J1957+032 has had four X-ray outbursts within 16 months, all very briefly detected (lasting