Astrofísicas: Agujeros negros supermasivos

  • Publicación
    A refined sub-grid model for black hole accretion and AGN feedback in large cosmological simulations

    In large-scale cosmological hydrodynamic simulations simplified sub-grid models for gas accretion on to black holes and AGN feedback are commonly used. Such...

  • Publicación
    Active Galactic Nuclei Feedback and the Origin and Fate of the Hot Gas in Early-type Galaxies

    A recent determination of the relationships between the X-ray luminosity of the ISM (L X) and the stellar and total mass for a sample of nearby early-type...

  • Publicación
    AGILE, Fermi, Swift, and GASP/WEBT multi-wavelength observations of the high-redshift blazar 4C +71.07 in outburst

    Context. The flat-spectrum radio quasar 4C +71.07 is a high-redshift (z = 2.172), γ-loud blazar whose optical emission is dominated by thermal radiation from...

  • Publicación
    Constraining the Epoch of Reionization from the Observed Properties of the High-z Universe

    We combine observational data on a dozen independent cosmic properties at high-z with the information on reionization drawn from the spectra of distant luminous...

  • Noticia
    El Gran Telescopio Canarias encuentra el agujero negro más lejano perteneciente a una rara familia de galaxias

    Un equipo internacional de astrónomos ha identificado una rara clase de galaxias que emiten rayos gamma, conocidas como BL Lacertae, dentro de los primeros 2...

  • Publicación
    Individual Estimates of the Virial Factor in 10 Quasars: Implications on the Kinematics of the Broad-line Region

    Assuming a gravitational origin for the Fe iiiλλ2039-2113 redshift and using microlensing based estimates of the size of the region emitting this feature, we...

  • Publicación
    Primary Black Hole Spin in OJ 287 as Determined by the General Relativity Centenary Flare

    OJ 287 is a quasi-periodic quasar with roughly 12 year optical cycles. It displays prominent outbursts that are predictable in a binary black hole model. The...

  • Noticia
    Revelada la estructura del famoso chorro de materia de M87, la galaxia más brillante del Cúmulo de Virgo

    Un trabajo del Máster en Astrofísica de la Universidad de Barcelona (UB) realizado en el Instituto de Astrofísica de Canarias (IAC) por la alumna Alejandra...

  • Publicación
    The Black Hole Mass-Color Relations for Early- and Late-type Galaxies: Red and Blue Sequences

    The tight correlations between supermassive black hole (SMBH) mass (MBH) and the properties of the host galaxy have useful implications for our understanding of...