Astrophysical: Black holes

  • Publication
    High time resolution optical/X-ray cross-correlations for X-ray binaries: anticorrelations and rapid variability
    Using simultaneous observations in X-rays and optical, we have performed a homogeneous analysis of the cross-correlation behaviours of four X-ray binaries...
  • Publication
    High-precision optical polarimetry of the accreting black hole V404 Cyg during the 2015 June outburst
    Our simultaneous three-colour (BVR) polarimetric observations of the low-mass black hole X-ray binary V404 Cyg show a small but statistically significant change...
  • Publication
    Hubble spectroscopy of LB-1: Comparison with B+black-hole and Be+stripped-star models
    Context. LB-1 (alias ALS 8775) has been proposed as either an X-ray dim B-type star plus black hole (B+BH) binary or a Be star plus an inflated stripped star...
  • Publication
    Hβ spectroscopy of the high-inclination black hole transient Swift J1357.2−0933 during quiescence
    Swift J1357.2−0933 is a transient low-mass X-ray binary hosting a stellar-mass black hole. The source exhibits optical dips and very broad emission lines during...
  • Publication
    Igr J17418-12122 - USNO 0778-0495204 is an AGN.
    The INTEGRAL/EINSTEIN/ROSAT/NVSS objects IGR J17418-12122, 2E 1739.1-1210, 1RXS J174155.3-121157 and NVSS J174155-121201 have recently been suggested to be the...
  • Publication
    Improved position of the new X-ray transient XTE J1637-498
    Following the discovery of the new X-ray transient XTE J1637-498 (Atel #1699), we obtained a short (nearly 1 ksec) observation using the Swift/XRT in PC mode on...
  • Publication
    Irradiation of the secondary star in X-ray Nova Scorpii 1994 (=GRO J1655-40)
    We have obtained intermediate resolution optical spectra of the black-hole candidate Nova Sco 1994 in June 1996, when the source was in an X-ray/optical active...
  • News
    James Webb telescope studies organic molecules near black holes
    Research led by the University of Oxford and with the participation of the Instituto de Astrofísica de Canarias (IAC) has succeeded in studying, for the first...
  • Talk
    JWST view of Polycyclic Aromatic Hydrocarbons and dust in local active galaxies
    Nowadays, it is widely accepted that most galaxies undergo an active phase in their evolution. The impact of the energy released by active galactic nuclei (AGN)...