Timothy J. Callahan

129 total papers · 2.2k total citations
68 papers, 1.6k citations indexed

About

Timothy J. Callahan is a scholar working on Fluid Flow and Transfer Processes, Automotive Engineering and Biomedical Engineering. According to data from OpenAlex, Timothy J. Callahan has authored 68 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Fluid Flow and Transfer Processes, 16 papers in Automotive Engineering and 16 papers in Biomedical Engineering. Recurrent topics in Timothy J. Callahan's work include Advanced Combustion Engine Technologies (25 papers), Biodiesel Production and Applications (15 papers) and Vehicle emissions and performance (15 papers). Timothy J. Callahan is often cited by papers focused on Advanced Combustion Engine Technologies (25 papers), Biodiesel Production and Applications (15 papers) and Vehicle emissions and performance (15 papers). Timothy J. Callahan collaborates with scholars based in United States, United Kingdom and Poland. Timothy J. Callahan's co-authors include Thomas W. Ryan, John Wawrzynek, John R. Hauser, Lee G. Dodge, Seth Copen Goldstein, C. A. Moses, André DeHon, Mihai Budiu, Girish Venkataramani and Tiberiu Chelcea and has published in prestigious journals such as Environmental Health Perspectives, Optics Express and Journal of Applied Crystallography.

In The Last Decade

Timothy J. Callahan

64 papers receiving 1.4k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Timothy J. Callahan 808 556 497 453 408 68 1.6k
Mahabubul Alam 857 1.1× 879 1.6× 71 0.1× 207 0.5× 39 0.1× 53 1.8k
Doo-Hyun Kim 544 0.7× 730 1.3× 42 0.1× 547 1.2× 87 0.2× 137 1.7k
Elbert Hendricks 1.3k 1.6× 144 0.3× 25 0.1× 273 0.6× 57 0.1× 48 1.9k
J.A. Cook 589 0.7× 94 0.2× 36 0.1× 129 0.3× 31 0.1× 61 1.4k
Yuichi Goto 805 1.0× 437 0.8× 9 0.0× 396 0.9× 60 0.1× 146 1.3k
Vaibhav K. Arghode 879 1.1× 268 0.5× 29 0.1× 1.2k 2.6× 64 0.2× 72 1.6k
Jakob Andert 571 0.7× 96 0.2× 19 0.0× 238 0.5× 15 0.0× 141 1.3k
Stephen E. Zitney 43 0.1× 637 1.1× 46 0.1× 371 0.8× 43 0.1× 96 1.7k
Ivan Arsie 684 0.8× 188 0.3× 8 0.0× 183 0.4× 19 0.0× 143 1.7k
Seung Hyun Yoon 1.3k 1.7× 1.1k 2.0× 3 0.0× 558 1.2× 48 0.1× 62 2.0k

Countries citing papers authored by Timothy J. Callahan

Since Specialization
Citations

This map shows the geographic impact of Timothy J. 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 Timothy J. Callahan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Timothy J. Callahan more than expected).

Fields of papers citing papers by Timothy J. Callahan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Timothy J. 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 Timothy J. Callahan. The network helps show where Timothy J. Callahan may publish in the future.

Co-authorship network of co-authors of Timothy J. Callahan

This figure shows the co-authorship network connecting the top 25 collaborators of Timothy J. Callahan. A scholar is included among the top collaborators of Timothy J. 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 Timothy J. Callahan. Timothy J. Callahan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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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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2026