P. D. Usher

135 total papers · 438 total citations
59 papers, 238 citations indexed

About

P. D. Usher is a scholar working on Astronomy and Astrophysics, Instrumentation and Computational Mechanics. According to data from OpenAlex, P. D. Usher has authored 59 papers receiving a total of 238 indexed citations (citations by other indexed papers that have themselves been cited), including 38 papers in Astronomy and Astrophysics, 21 papers in Instrumentation and 11 papers in Computational Mechanics. Recurrent topics in P. D. Usher’s work include Astronomy and Astrophysical Research (21 papers), Stellar, planetary, and galactic studies (16 papers) and Galaxies: Formation, Evolution, Phenomena (11 papers). P. D. Usher is often cited by papers focused on Astronomy and Astrophysical Research (21 papers), Stellar, planetary, and galactic studies (16 papers) and Galaxies: Formation, Evolution, Phenomena (11 papers). P. D. Usher collaborates with scholars based in United States, Italy and Russia. P. D. Usher's co-authors include K. J. Mitchell, G. B. Rybicki, Igor Jurkevich, O. P. Manley, Frances W. Wright, David L. Hall, Harlow Shapley, John W. Barrett, R. Giacconi and H. Gursky and has published in prestigious journals such as Nature, The Astrophysical Journal and Journal of Computational Physics.

Co-authorship network of co-authors of P. D. Usher

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

P. D. Usher

45 papers receiving 213 citations

Fields of papers citing papers by P. D. Usher

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. D. Usher. 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 P. D. Usher. The network helps show where P. D. Usher may publish in the future.

Countries citing papers authored by P. D. Usher

Since Specialization
Citations

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

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