Problems: Software and Data

IV.5 Mean-field solar dynamo models

You will find below the computer software required to do the problems at the end of chapter 5 of part IV of the course. In grabbing the files directly from this page with your browser, make sure to save all files as Plain Text. All problems in chapter 5 require you to use the same codes, so no matter which problem you are attempting you will need to grab all of the following files:

README.txt: Important Instructions
sphdyn_eig.f: Fortran source code
butterfly.idl: IDL source code, for graphics postprocessing.
medplane.idl: IDL source code, for graphics postprocessing.

The file README.txt contains general information concerning the compilation and running of Fortran and IDL codes, as well as instructions specific to the problems themselves.

The file sphdyn_eig.f is a Fortran-77 source code that solves the linear eigenvalue problem defined by eq. (5.12) in the class notes, using inverse iteration. It produces a single unformatted output file, called by default solution.i3e.

The file medplane.idl is an IDL source code that plots a dynamo solution at six phase intervals, similar to Figures 5.2 or 5.3 in chapter IV.5 of the class notes. It reads in an unformatted output file produced by sphdyn_eig.f.

The file butterfly.idl is an IDL source code that produces a butterfly diagram, similar to Figures 5.4 or 5.7 in chapter IV.5 of the class notes. It reads in an unformatted output file produced by sphdyn_eig.f.

Return to ASTR7500 homepage. -Written by paulchar@hao.ucar.edu.

-Last Revised 3 November 1997 by paulchar@hao.ucar.edu.