We present unambiguous evidence for a parsec scale wind in the broad-line radio galaxy 3C 382, the first radio-loud active galactic nucleus, with R L = log10(f 5 GHz/f 4400)>1, whereby an outflow has been measured with X-ray grating spectroscopy. A 118 ks Chandra grating (HETG) observation of 3C382 has revealed the presence of several high ionization absorption lines in the soft X-ray band, from Fe, Ne, Mg, and Si. The absorption lines are blueshifted with respect to the systemic velocity of 3C382 by -840 60 km s-1 and are resolved by Chandra with a velocity width of σ = 340 ± 70 km s-1. The outflow appears to originate from a single zone of gas of column density N H = 1.3 × 1021 cm-2 and ionization parameter log(ξ/erg cm s-1) = 2.45. From the above measurements we calculate that the outflow is observed on parsec scales, within the likely range from 10to1000 pc, i.e., consistent with an origin in the narrow-line region.
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science