DOI:https://doi.org/10.1103/PhysRevLett.124.029001
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society
(Left panel) The HI brightness temperature spectrum in the direction of . An arrow marks the extremely narrow line quoted in the table of Ref. [2], while the smooth curve shows a more appropriate Gaussian fit to the emission feature. (Right panel) The corresponding spectrum for G33.4–8.0 [15].
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