Three-Dimensional Reconstruction of Coronal Features: A Python Tool for Geometric Triangulation

Abstract The determination of the three-dimensional (3D) geometry coronal features is important for understanding magnetic structuring solar atmosphere. In this context, length a loop, which subject to standing transverse oscillations, crucial parameter in seismology correct estimation phase speed wave and, consequently, Alfvén and magnetic-field strength. Simultaneous space-based observations corona from different vantage points, e.g. one Solar Dynamics Observatory (SDO) second TErrestrial RElations (STEREO), have permitted reconstruction loops. Nisticò, Verwichte, Nakariakov ( Entropy 15 , 4520, 2013) proposed method based on principal component analysis fitting an ensemble 3D points that sample loop. This was shown retrieve easily main geometric parameters define such as loop axes plane. article, extension work presented includes Python tool performing triangulation seen by two observers.