296 datasets found

Keywords: bl lacertae objects

Filter Results
  • Classification and Jet Power of Fermi Blazars

    In this work, we compile a sample of 449 Fermi blazars with the luminosity of the broadline region, the black hole mass, the beam radio luminosity, and the jet power; obtain the...
  • The CLASS blazar survey. III.

    We discuss the properties of the sources in the CLASS blazar survey, which aims at the selection of low radio power (P_5GHz_<10^25^W/Hz) blazars. We use Very Large Array...
  • The Roma BZCAT - 5th edition

    The Roma-BZCAT is now at the 5th Edition which contains coordinates and multi-frequency data of 3561 sources, about 30% more than in the 1st edition, either confirmed blazars or...
  • Quasars and Active Galactic Nuclei (13th Ed.)

    This catalogue is a compilation of all known AGNs presented in a compact and convenient form. It is an update of the previous versions; and as in the previous editions no...
  • Quasars and Active Galactic Nuclei (12th Ed.)

    This catalogue is an update of the previous versions; as in the previous editions no information about absorption lines of X-ray properties are given, but absolute magnitudes...
  • Quasars and Active Galactic Nuclei (11th Ed.)

    This catalogue is an update of the previous versions. The recent release of the final release of the 2dF quasar catalogue and of the first part of the SLOAN catalogue, almost...
  • Quasars and Active Galactic Nuclei (10th Ed.)

    This catalogue is an update of the previous versions. The recent publication of the first release of the 2dF quasar survey (Croom et al., 2001MNRAS.322L..29C, see Cat. )...
  • Quasars and Active Galactic Nuclei (9th Ed.)

    This catalogue is an update of the previous versions. It contains 13214 (+1856) quasars (defined as brighter than absolute B magnitude -23), 4428 (+1094) AGNs (defined as...
  • Quasars and Active Galactic Nuclei (8th Ed.)

    This catalogue is an update of the previous versions. It contains 11358 (+2759) quasars (defined as brighter than absolute B magnitude -23), 3334 (+501) AGNs (defined as fainter...
  • Quasars and Active Galactic Nuclei (7th Ed.)

    This catalogue is an update of the the previous versions. It contains 8609 (+172) quasars (defined as brighter than absolute B magnitude -23), 2833 (+978) AGNs (defined as...
  • Revised and Updated Catalog of Quasi-stellar Objects

    This is a catalog of all known quasi-stellar objects (QSO's) with measured emission redshifts and BL Lac objects, complete to 1992 December 31. The catalog contains 7312...
  • S5 0716+714 polarization & brightness 1991-2004

    We investigate the photometric and polarimetric behavior of the blazar S5 0716+714 based on the observations carried out in 1991-2004 at the 125-cm Crimean Astrophysical...
  • BV(RI)c-JHK photometry of BL Lac in 1999-2001

    Results of multicolor observations of BL Lac in 1999-2001 are presented. We show that the spectral energy distribution of the variable component in the range from K to B had...
  • gamma-ray properties of FR-Is and BL Lacs

    Our knowledge of Giga-electron volt (GeV) radio galaxies has been revolutionized by the Fermi-LAT Telescope, which provides an excellent opportunity to study the physical...
  • Radio loudness and classification for radio source

    The extragalactic radio sources are divided into two subclasses (radio-loud and radio-quiet sources) in the literature using radio loudness (R), which is defined as the ratio of...
  • Multi-wave band emission from blazars

    We studied the correlations of the flux of the broad-line emission (FBLR) with the X-ray emission flux, optical emission flux at 5500{AA} and radio emission flux at 5GHz,...
  • Cluster analysis of Roma-BZCAT blazars

    Based on the collected multiwavelength data, namely in the radio (NVSS, FIRST, RATAN-600), IR (WISE), optical (Pan-STARRS), UV (GALEX), and X-ray (ROSAT, Swift-XRT) ranges, we...
  • Blazars properties

    We analyzed the relationship between several basic parameters describing supermassive black holes such as jet power, black hole spin, accretion disk magnetic field, black hole...
  • gamma-ray spectrum for Fermi blazars

    The curvature of the {gamma}-ray spectrum in blazars may reflect the intrinsic distribution of emitting electrons, which will further give some information on the possible...
  • Sample of Fermi Blazars

    We study the {gamma}-ray luminosity and beaming effect for Fermi blazars. Our results are as follows. (i) There are significant correlations between {gamma}-ray luminosity and...
You can also access this registry using the API (see API Docs).