Discovery of gamma-ray emission from the black hole system Cygnus X-3

Discovery of extreme particle acceleration preceding relativistic jet plasmoid ejections from the black hole candidate Cyg X-3. Repeatedly detected by AGILE since 2008. First comprehensive survey of all Galactic microquasars by Super-AGILE and AGILE-GRID (Tavani et al., Nature, 462, 620, 2009).


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