Image Details
Caption: Figure A1.
Median images of the Galactic center in Channels 1, 2, 3, and 4. The location of Sgr A* is marked with the square box, and the locations of the reference pixels used to estimate the noise in the image are marked by white dots. Axis labels are in pixel number with pixel angular sizes given in the text. The flux-density scale is in units of MJy sr−1.
© 2025. The Author(s). Published by the American Astronomical Society.