Histogram of magnetic field position angles with binsize 10° obtained from SCUPOL (a 90° offset has been made to the SCUPOL polarisation position angles to obtain the magnetic field orientation). The plot also shows the distribution of P versus the magnetic field position angles. The open squares represent the data from the entire core which includes the regions containing both IRAM 04191-IRS and IRAS 04191+1523. The filled circles enclosed in open squares represent the measurements from a circular region of radius of 40′′ about IRAM 04191-IRS. The position angle of the CO outflow associated with IRAM 04191-IRS is shown by a dashed line. The direction of the Galactic plane at the latitude of this cloud is shown by a dotted line.
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