Astrofísicas: Acreción

  • Publicación
    Recovery of the X-ray polarisation of Swift J1727.8−1613 after the soft-to-hard spectral transition
    We report on the detection of X-ray polarisation in the black-hole X-ray binary Swift J1727.8−1613 during its dim hard spectral state by the Imaging X-ray...
  • Publicación
    Refined Orbital Solution and Quiescent Variability in the Black Hole Transient GS 1354-64 (= BW Cir)
    In Casares et al. we presented the first radial velocity curve of the companion star to BW Cir which demonstrates the presence of a black hole in this...
  • Publicación
    Reprocessing from Highly Ionized Gas in the Soft Spectral State of V4641 Sgr with NuSTAR
    V4641 Sgr is a low-mass black hole X-ray binary system with somewhat puzzling spectral characteristics during its soft state. Recent high-resolution...
  • Publicación
    Resolving the Innermost Region of the Accretion Disk of the Lensed Quasar Q2237+0305 through Gravitational Microlensing
    We study three high magnification microlensing events, generally recognized as probable caustic crossings, in the optical light curves of the multiply imaged...
  • Publicación
    Revealing the inner workings of the lensed quasar SDSS J1339+1310: Insights from microlensing analysis
    Aims. We aim to unveil the structure of the continuum and broad-emission line (BEL) emitting regions in the gravitationally lensed quasar SDSS J1339+1310 by...
  • Publicación
    Revealing the Nature of the ULX and X-Ray Population of the Spiral Galaxy NGC 4088
    We present the first Chandra and Swift X-ray study of the spiral galaxy NGC 4088 and its ultraluminous X-ray source (ULX N4088-X1). We also report very long...
  • Publicación
    Revealing the structure of the lensed quasar Q 0957+561. I. Accretion disk size
    Aims: We aim to use signatures of microlensing induced by stars in the foreground lens galaxy to infer the size of the accretion disk in the gravitationally...
  • Publicación
    Revisiting the fundamental parameters for the black hole X-ray transient Swift J1753.5–0127
    We present time-resolved Gran Telescopio Canarias optical spectroscopy and William Herschel Telescope i-band photometry of the X-ray transient SWIFT J1753.5...