Name:
calculate_beff.pro
Purpose:
Calculates the effective connected magnetic field strength of an active region.
Calling sequence:
Beff=calculate_beff(c_img, pix_size, Bz_thres=Bz_thres, min_flux=min_flux, min_size=min_size, out_Stru=blos_stru, smooth=smooth)
Input parameters:
c_img : Br or Blos HARP cutout magnetogram, corrected for limb presence. Blos cutout should be deprojected.
pix_size : the pixel size in arcsec
Keywords:
Bz_thres: minimum magnetic strength considered
Min_flux : minimum enclosed flux for a partition to be considered. Partitions with lower enclosed magnetic flux are discarded
Min_size : minimum area of the acceptable partitions (in pixels)
out_stru : an output structure that contains several optional outputs such as the separation length, the total magnetic flux that is contained in the partitions, the partition mask etc.
smooth : the width of a smoothing window performed to the input magnetogram, prior to partitioning.
Output:
Beff : the effective connected magnetic field strength
Property name in DB:
beff_Br.beff, beff_Blos.beff
Repository:
https://dev.flarecast.eu/stash/projects/FE/repos/beff-idl/browse
References:
Georgoulis & Rust, 2007, The Astrophysical Journal Letters, 661, 1