Bibcode
Barrio, F. Eugenio; Jarvis, Matt J.; Rawlings, Steve; Bauer, Amanda; Croft, Steve; Hill, Gary J.; Manchado, A.; McLure, Ross J.; Smith, Daniel J. B.; Targett, Thomas A.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 389, Issue 2, pp. 792-798.
Fecha de publicación:
9
2008
Número de citas
15
Número de citas referidas
15
Descripción
We report here on the discovery of a red quasar, J004929.4+351025.7 at a
redshift of z = 2.48, situated within a large Lyα emission-line
halo. The radio spectral energy distribution implies that the radio jets
were triggered <104yr prior to the time at which the
object is observed, suggesting that the jet triggering of the active
galactic nucleus is recent. The loosely biconical structure of the
emission-line halo suggests that it is ionized by photons emitted by the
central quasar nucleus and that the central nucleus is obscured by a
dusty torus with AV ~ 3.0. The large spatial extent of the
Lyα halo relative to the radio emission means this could only have
occurred if the radio jets emerged from an already established highly
accreting black hole. This suggests that the radio jet triggering is
delayed with respect to the onset of accretion activity on to the
central supermassive black hole.