Chandra detection of a parsec scale wind in the broad-line radio galaxy 3C 382

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.