Astrophysical: Active galactic nuclei

  • Publication
    3D Spectroscopy with GTC-MEGARA of the Triple AGN Candidate in SDSS J102700.40+174900.8

    Triple-active galactic nucleus (AGN) systems are expected to be the result of the hierarchical model of galaxy formation. Since there are very few of them...

  • News
    A galaxy which outshines the rest

    Gas is essential to the process of forming a galaxy. During the first stages the amount of gas present determines the number of stars which will be in the...

  • Publication
    A Reemerging Bright Soft X-Ray State of the Changing-look Active Galactic Nucleus 1ES 1927+654: A Multiwavelength View

    1ES1927+654 is a nearby active galactic nucleus (AGN) that has shown an enigmatic outburst in optical/UV followed by X-rays, exhibiting strange variability...

  • Publication
    Accretion tori and cones of ionizing radiation in Seyfert galaxies

    The photoionization of extended narrow-line regions in Seyfert galaxies by the radiation produced in a thick accretion disk is studied. The emission-line...

  • Publication
    Active galactic nuclei and nuclear starbursts.

    The Starburst model for radio-quiet Active Galactic Nuclei (AGN) postulates that the activity seen in most AGN is powered solely by young stars and compact...

  • Publication
    Adaptive Optics Observations of Active Galactic Nuclei: Zooming into the Central Parsec Region

    First results from the AGN-Heidelberg program aimed at resolving the central pc region of the closest Active Galactic Nuclei in the IR are presented. The core...

  • Publication
    An idealized model for dust accretion in active galactic nuclei

    With an adequate supply of matter, the inward drifting of dust particles induced by the Poynting-Robertson effect can lead to the formation of a shell or disk...

  • Publication
    An optical fiber system to perform bidimensional spectroscopy

    This article describes a fiber optic system contrived to perform spectral imaging of extended objects. It consists of two fiber bundles mounted simultaneously...

  • Publication
    Are the extended narrow line regions in AGN photoionized by the emission from thick accretion disks?

    We study the photoionization of the Extended Narrow Line Region (ENLR) using three anisotropic radiation fields: (1) a geometrically thick accretion disk; (2) a...