Data di Pubblicazione:
2013
Abstract:
BL Lac objects are the most numerous class of extragalactic TeV-detected sources. One of the biggest difficulties
in investigating their TeV emission is due to their limited number, since only 47 BL Lac objects are known to be
TeV emitters. In this paper, we propose new criteria to select TeV BL Lac candidates based on infrared and X-ray
observations. We apply our selection criteria to the BL Lac objects listed in the ROMA-BZCAT catalog, thereby
identifying 41 potential TeV emitters. We then perform a search over a more extended sample combining the
ROSAT bright source catalog and the WISE all-sky survey, revealing 54 additional candidates for TeV observations.
Our investigation also led to a tentative classification of 16 unidentified X-ray sources as BL Lac candidates. This
analysis provides new interesting BL Lac targets for future observations with ground-based Cherenkov telescopes.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
BL Lacertae objects: general , galaxies: active , radiation mechanisms: non-thermal , X-rays: galaxies
Elenco autori:
F. Massaro;A. Paggi;M. Errando;R. D'Abrusco;N. Masetti;G. Tosti;S. Funk
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