paper
VLBA images of High Frequency Peakers
M. Orienti, D. Dallacasa, S. Tinti, C. Stanghellini
VLBA images of High Frequency Peakers
M. Orienti, D. Dallacasa, S. Tinti, C. Stanghellini
paper2006-02-07English
high frequency tradingarxiv
Description
We propose a morphological classification based on the parsec scale structure of fifty-one High Frequency Peakers (HFPs) from the ``bright'' HFP sample. VLBA images at two adjacent frequencies (chosen among 8.4, 15.3, 22.2 and 43.2 GHz) have been used to investigate the morphological properties of the HFPs in the optically thin part of their spectrum. We confirm that there is quite a clear distinction between the pc-scale radio structure of galaxies and quasars: the 78% of the galaxies show a ``...
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