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- W1975549367 abstract "Context. 2251+158 (3C 454.3) is a well-studied quasar with rather unusual properties. It is among the most variable and brightest gamma-ray emitting active galactic nucleus (AGN) in the sky observed by Fermi. The multi-wavelength flux density emission of this source is peculiar, and so is the very long baseline interferometry (VLBI) structure. While it is usually assumed that the jet and jet-components in a given AGN show more or less the same properties (e.g., apparent velocities and paths) with time, we demonstrate here that unusual morphologies (arc-like structure) can occur as temporal phenomena. We also show that the kinematic properties of jet components change from slow to fast apparent motion." @default.
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- W1975549367 date "2013-08-23" @default.
- W1975549367 modified "2023-09-27" @default.
- W1975549367 title "2251+158 (3C 454.3): detection of an arc-like structure on parsec scales" @default.
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- W1975549367 doi "https://doi.org/10.1051/0004-6361/201220147" @default.
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