I am making plots for a publication using matplotlib which requires the use of heavy fonts. I am rendering text in the graph with Latex, which has a limited capability to make fonts more heavy. I partially solved the problem using the \boldmath Latex command for the axis-labels and text inside the plot (see attached figure). The only remaining text to be "bolden" are the tick labels. I can change their size via the xtick.labelsize rc parameter, but do not know how to make them heavier.
Does anybody know what can be done to solve this?
Any help would be appreciated!!!!