Spatial distribution of c-C₃H₂ 2_0,2 − 1_1,1 (white contours) and CH₃OH (E₂) (black contours). These are shown as detected toward L1521E overplotted on the N(H₂) map which was derived from Herschel/SPIRE (color map), showing the large-scale environment of L1521E (top) and the spatial structure of molecular line emission close to the center of the core (bottom). The two overplotted lines show the location of the cuts along which the line intensities shown in Fig. 4 were extracted. The contour levels start from 6σ rms in steps of 6σ rms, with 3σ rms levels of 0.07 and 0.06 K km s⁻¹ for CH₃OH and c-C₃H₂, respectively.