Fig. 9

thumbnail

Properties of our preferred model. The top-left plot shows the adopted 26Al source distribution in the plane of the Milky Way as seen from above. Also indicated is the position of the Sun (8 kpc from the Galactic centre), the location of the bar (dashed), and several longitudinal directions of interest. The colour indicates the 26Al density (yellow: highest, black: lowest). The other plots show quantities derived from this source distribution as a function of Galactic longitude as solid black lines (top right: received flux in arbitrary units, bottom left: velocity centroid shift, bottom right: velocity width). Overplotted are the observed data points with error bars showing one standard deviation, and upper limits of three standard deviations in the case of the velocity width. The flux excess at l = −24° may be due to foreground emission from the Sco-Cen association (Diehl et al. 2010) leaking from higher latitudes into our ROI bin. The observational limits on the velocity width are not constraining and are compatible with expectations (see Sect. 2.2).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.