Long-term and short-term radio and X-ray variability at 5 GHz in highly accreting and extremely radio-quiet AGNs

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High Energy Astrophysical Phenomena

Astrophysics of Galaxies

Long-term and short-term radio and X-ray variability at 5 GHz in highly accreting and extremely radio-quiet AGNs

Daily variability at milli-arcsecond scales in the radio quiet NLSy1 Mrk 110

We present evidence for significant radio variability at 5 ghz at milli-arcsecond scales on days to weeks time scales in the highly accreting and extremely radio-quiet (rq) and extremely radio-quiet (rq) active galactic nucleus (agn), the narrow line seyfert 1 (nlsy1) active galactic nucleus (agn), in the highly accreting and extremely radio-quiet (rq) active galactic nucleus (agn), the highly accreting and extremely radio-quiet (rq) active galactic nucleus (agn), the narrow line seyfert 1 (nlsy1).

The high brightness temperature and the radio and x-ray variability rule out a star-formation and a disc wind origin.

Synchrotron emission from a low-power jet and/or an outflowing corona is favoured.

Authors

Francesca Panessa, Miguel Perez-Torres, Lorena Hernandez-Garcia, Piergiorgio Casella, Marcello Giroletti, Monica Orienti, Ranieri D. Baldi, Loredana Bassani, Maria Teresa Fiocchi, Fabio La Franca, Angela Malizia, Ian McHardy, Fabrizio Nicastro, Luigi Piro, Federico Vincentelli, David R.A. Williams, Pietro Ubertini

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