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High resolution X-ray spectroscopy of the warm absorber in the nearby X-raybright Seyfert 1 galaxy, Mrk 1040 is presented. The observations were carriedout in the 2013-2014 timeframe using the Chandra High Energy TransmissionGrating with a total exposure of 200 ks. A multitude of absorption lines fromNe, Mg and Si are detected from a wide variety of ionization states. Inparticular, the detection of inner K-shell absorption lines from Ne, Mg and Si,from charge states ranging from F-like to Li-like ions, suggests the presenceof a substantial amount of low ionization absorbing gas, illuminated by a steepsoft X-ray continuum. The observations reveal at least 3 warm absorbingcomponents ranging in ionization parameter from $\log\xi = 0-2$ and with columndensities of $N_{\rm H} =1.5-4.0 \times 10^{21}$cm$^{-2}$. The velocityprofiles imply that the outflow velocities of the absorbing gas are low andwithin $\pm100$ km s$^{-1}$ of the systemic velocity of Mrk 1040, whichsuggests any outflowing gas may have stalled in this AGN on large enoughscales. The warm absorber is likely located far from the black hole, within 300pc of the nucleus and is spatially coincident with emission from an extendedNarrow Line Region as seen in the HST images. The iron K band spectrum revealsonly narrow emission lines, with Fe K$\alpha$ at 6.4 keV consistent withoriginating from reflection off Compton thick pc-scale reprocessing gas.

High Resolution X-ray Spectroscopy of the Seyfert 1, Mrk 1040. Revealing the Failed Nuclear Wind with Chandra