Extended Data Fig. 1: The combined Chandra/HETG images highlighting the 1st-order MEG/HEG arms.
From: An energetic hot wind from the low-luminosity active galactic nucleus M81*
Spectra are extracted from the individual observations of different roll angles and then combined to form the final spectrum. The green rectangles illustrate the spectral extraction region (solid rectangles for the source and the adjacent dashed rectangles for the background) for one of the 15 observations. The NuSTAR source region is marked by the vermillion solid circle, while the corresponding background region is marked by the vermillion dashed annulus. Discrete sources falling within the NuSTAR spectral extraction regions are not excluded, but their collective flux contribution is negligible.
