Browsing by Author "Andruchow, I."

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Powerful Radio Sources in the Southern Sky. I. Optical Identifications

Massaro, F.; White, S. V.; García-Pérez, A.; Jimenez-Gallardo, A.; Capetti, A.; Cheung, C. C.; Forman, W. R.; Mazzucchelli, C.; Paggi, A.; Nesvadba, N. P. H.; Madrid, J. P.; Andruchow, I.; Cellone, S.; Peña-Herazo, H. A.; Grossová, R.; Balmaverde, B.; Sani, E.; Chavushyan, V.; Kraft, R. P.; Reynaldi, V.; Leto, C. (2023)

Since the early sixties, our view of radio galaxies and quasars has been drastically shaped by discoveries made thanks to observations of radio sources listed in the Third Cambridge Catalog and its revised version (3CR). ...
Radio-weak BL Lac Objects in the Fermi Era

Massaro, Francesco; Marchesini, E. J.; D'Abrusco, R.; Masetti, N.; Andruchow, I.; Smith, Howard A. (2017)

The existence of "radio-weak BL Lac objects" (RWBLs) has been an open question, and has remained unsolved since the discovery that quasars could be radio-quiet or radio-loud. Recently, several groups identified RWBL ...
The ?-ray sky seen at X-ray energies. I. Searching for the connection between X-rays and ?-rays in Fermi BL Lac objects

Marchesini, E. J.; Paggi, A.; Massaro, F.; Masetti, N.; D'Abrusco, Raffaele; Andruchow, I.; de Menezes, R. (2019)

Context. BL Lac objects are an extreme type of active galactic nuclei (AGNs) that belong to the largest population of ?-ray sources: blazars. This class of AGNs shows a double-bumped spectral energy distribution that is ...

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