3C 411

3C 411 is a broad-line radio galaxy (BLRG).^[7] It is found to contain a double lobed source. When observed through radio mapping, the source is found to contain a radio emission bridge of low surface brightness connecting the components, with a nuclear point source dominating over the optical object.^[6] Imaging by the Very Large Array (VLA) in 1984 showed the source is heavily depolarized with the radio spectrum steepening outside the location of its hotspots. A radio jet is also shown linking with a central component with the hotspot feature that is located in the western radio lobe.^[8] At 15 GHz the source also shows signs of spectra steepening in both of its lobes.^[9]

An observation conducted in 2014 by XMM Newton found 3C 411 is a flat-spectrum radio quasar. It is found to have a cold accretion disk around its central supermassive black hole. The estimated mass of the black hole is 3 × 10⁷ M_☉, and the object has a total flux density of 2.20 ± 0.16 × 10⁻¹² erg cm⁻² s⁻¹. A double power-law component was also found in 3C 411, mainly made up of a hard component and a Seyfert type-like component.^[10]

In March 2019 the object was thought to have a blazar core in its center. However when observed, its jet is shown as straight on a trajectory path with an inclination angle at 50°. Although Very Long Baseline Interferometry (VLBI) observations found the core as compact, it is found to be modelled by multiple jet components instead of a blazar jet, ruling out the possibly of it being classified as a blazar.^[11]

• 3C 411 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• 3C 411 on SIMBAD