Astrofísicas: Agujeros negros

  • Publicación
    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...
  • Noticia
    Identifican estados de actividad similares en agujeros negros supermasivos y estelares
    Los investigadores Juan A. Fernández-Ontiveros, del Istituto Nazionale di Astrofisica (INAF) en Roma y Teo Muñoz-Darias, del Instituto de Astrofísica de...
  • Publicación
    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...
  • Publicación
    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...
  • Publicación
    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...
  • Charla
    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)...
  • Charla
    Kyoto 3.8m segmented telescope project
    The 3.8m optical and infrared telescope, which is Japan's first segmented mirror telescope, is now being constructed using the world's first super high...
  • Noticia
    La erupción de una estrella de neutrones revela la naturaleza de fenómenos solo observados en agujeros negros
    Un equipo científico internacional, liderado por el Instituto de Astrofísica de Canarias (IAC), ha encontrado una estrella de neutrones que roba materia a una...
  • Publicación
    Lens parameters for Gaia18cbf - a long gravitational microlensing event in the Galactic plane
    Context. The timescale of a microlensing event scales as a square root of a lens mass. Therefore, long-lasting events are important candidates for massive...