Expected values of RM for a CNM cloud given a typical electron density for the CNM of ne = 0.02 cm−3 (Ferrière 2020). RM is shown as a function of the strength of magnetic-field component parallel to the line of sight, B∥, and of the line-of-sight thickness of the cloud, ΔLOS. Orange contours show RM values of 1, 2.5, 5, 10, and 20 rad m−2. Vertical white lines and shades correspond to the median and standard deviation of B∥ found in the CNM (Heiles & Troland 2005). The horizontal white line indicates the standard size of a CNM cloud (Ferrière 2020). Two red stars mark the values of RM found in Thomson et al. (2019) and associated with CNM clouds.
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.