Browsing by Author "Pena-Herazo, Harold A."

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    Optical characterization of WISE selected blazar candidates
    (2019) de Menezes, Raniere; Pena-Herazo, Harold A.; Marchesini, Ezequiel J.; D'Abrusco, Raffaele; Masetti, Nicola; Nemmen, Rodrigo; Massaro, Francesco; Ricci, Federica; Landoni, Marco; Paggi, Alessandro; Smith, Howard A.
    Context. Over the last decade more than five thousand gamma-ray sources have been detected by the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope. Given the positional uncertainty of the telescope, nearly 30% of these sources remain without an obvious counterpart at lower energies. This has motivated the release of new catalogs of gamma-ray counterpart candidates and several follow up campaigns in the last decade.