We assume a weighted but undirected link between two researchers whenever one acknowledges the other on a published research paper. The weight corresponds to the inverse number of authors. Additionally, we assume an undirected link of weight 1 between every pair of authors. Weights are additive.
We have used all acknowledgments from all published research articles published in six journals: The Journal of Finance, The Review of Financial Studies, the Journal of Financial Economics, the Journal of Financial Intermediation, the Journal of Money, Credit & Banking, and the Journal of Banking and Finance.
For computational reasons, we show the giant component only and remove links that occur only once and which at the same year have a weight smaller than 1 (i.e. one-time co-author ties remain). Nodes are color-coded: red nodes are pure authors (authors that are not acknowledged in the dataset), blue nodes are pure commenters (acknowledged commenters not having authored a paper in the dataset), while yellow nodes are commenting authors. Node positions according to an adapted Fruchterman-Reingold algorithm. Visualization using vis.js.