Relativistic corrections to Compton heating and cooling have been added,
using a procedure based on the work of Guilbert (1986).
A new format for the storage of atomic data has been adopted, resulting in
smaller files, and faster read times. This change should be transparent to the
user, except for considerable speeding of data loading and program startup.
A new algorithm for continuum transfer has been adopted, outward only
transfer. This gives better energy conservation overall. A new column has been added
in the log file output, labeled `h-c', it tells the percent error in total energy conservation
in the radiation field, i.e. total emitted - total absorbed.
A new algorithm has been adopted for solving the statistical equilbrium,
in place of LU decomposition. The algorithm involves an iterative solution to a
simplified set of equations, and is described by Lucy (2001). This change should result in
fast execution for models involving iron and other heavy elements, but will otherwise be
transparent to the user.
Various changes to atomic data, including increase in size of data file and
addition of a new data type, for excitation of Fe XIX using data from Bhatia.
Various minor inconsistencies and errors have been corrected, including
spurious recombination emission to multiply excited levels.
Standard output in the log file has been extended to include a list of the
strongest absorption lines, and emission and absorption edges.
Also, a new output file, xout_rrc1.fits, is created which contains a fits format
list of the RRC strengths.