Ryan Callahan

60 papers and 394 indexed citations
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About

Ryan Callahan is a scholar working on Epidemiology, Pulmonary and Respiratory Medicine and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Ryan Callahan has authored 60 papers receiving a total of 394 indexed citations (citations by other indexed papers that have themselves been cited), including 48 papers in Epidemiology, 34 papers in Pulmonary and Respiratory Medicine and 26 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Ryan Callahan’s work include Congenital Heart Disease Studies (47 papers), Pulmonary Hypertension Research and Treatments (12 papers) and Mechanical Circulatory Support Devices (9 papers). Ryan Callahan is often cited by papers focused on Congenital Heart Disease Studies (47 papers), Pulmonary Hypertension Research and Treatments (12 papers) and Mechanical Circulatory Support Devices (9 papers). Ryan Callahan collaborates with scholars based in United States, Canada and Poland. Ryan Callahan's co-authors include Kathy J. Jenkins, Kimberlee Gauvreau, Christopher W. Baird, Christina M. Ireland, Audrey C. Marshall, Sara O. Vargas, Diego Porras, Laureen Sena, Steven D. Colan and Jesse J. Esch and has published in prestigious journals such as Proceedings of the Royal Society B Biological Sciences, The Journal of Pediatrics and American Heart Journal.

In The Last Decade

Co-authorship network of co-authors of Ryan Callahan

This figure shows the co-authorship network connecting the top 25 collaborators of Ryan Callahan. A scholar is included among the top collaborators of Ryan Callahan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryan Callahan. Ryan Callahan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

Ryan Callahan

48 papers receiving 367 citations

Fields of papers citing papers by Ryan Callahan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryan Callahan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryan Callahan. The network helps show where Ryan Callahan may publish in the future.

Countries citing papers authored by Ryan Callahan

Since Specialization
Citations

This map shows the geographic impact of Ryan Callahan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryan Callahan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryan Callahan more than expected).

Top Papers & Citation Paths

Explore Ryan Callahan's most cited publications and discover how their work connects to other scholars through citations.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar’s output or impact.

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