Here is a heliophysics community to investigate using co-citation analysis. Nodes represent articles and edges connect articles that were cited together in more than three other articles between 1960 and 2010.

My procedure:

1. I started with a list of 209 living (or recently deceased) scientists who contributed to solar physics.
2. I used Web of Science to generate 5,742 articles co-authored by these scientists, then down-selected the top 1,000 most cited articles from the period 1960 to 2010.
3. I used Sci2 Tool and this tutorial by Scott Weingart to generate a co-citation graph from these articles.
4. I used Gephi to visualize the graph, filtering and resizing nodes by their centrality and displaying only those articles that strongly influenced other authors in the set.