Free Access

Fig. 6.


Inversion of a penumbral pixel (highlighted in Fig. 1 with a red square). In black, the simulated Stokes parameters, 𝕀syn(λ), (left column) and atmosphere model parameters inverted in geometrical scale (Xsyn(z), middle column) and in optical depth scale (Xsyn(lgτ5), rightmost column). The results of the inversion in hydrostatic equilibrium for the third and fourth cycle (see text), ) and ), are in solid red and dashed blue, respectively. The physical parameters inverted are T(z), vLOS(z), Bx(z), By(z), and Bz(z). Since the height origin is not absolute (see Sect. 3.2), each atmosphere model is forced to have h(τ5 = 1) = 1000 km. The atmosphere models are only shown between lg(τ5) = 1.5 and lg(τ5) = − 5 as the Stokes profiles, given the spectral line setup, are sensitive inside these optical depths, though the whole atmosphere is inverted. The shadowed area shows the lower limit errors for each physical parameter.

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.