Vsop Observation of the Quasar Pks2215+020: a New Laboratory
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چکیده
We report results of a VSOP (VLBI Space Observatory Programme) observation of a high redshift quasar PKS2215+020 (z = 3.57). The ∼1 milliarcsecond resolution image of the quasar reveals a prominent ‘core-jet’ structure on linear scales from 5h to 300h pc (H◦ = 100 h kms Mpc). The brightness temperatures and sizes of bright features identified in the jet are consistent with emission from relativistic shocks dominated by adiabatic energy losses. The jet is powered by the central black hole with estimated mass of ∼ 4× 10M ⊙ . Comparisons with VLA and ROSAT observations indicate a possible presence of an extended radio/X–ray halo surrounding 2215+020. Subject headings: VLBI — galaxies: radio, quasars: radio, quasars: individual: PKS2215+020
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تاریخ انتشار 2000