J. Hamann

33 total papers · 53.0k total citations
4 papers, 49 citations indexed

About

J. Hamann is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Statistical and Nonlinear Physics. According to data from OpenAlex, J. Hamann has authored 4 papers receiving a total of 49 indexed citations (citations by other indexed papers that have themselves been cited), including 4 papers in Astronomy and Astrophysics, 3 papers in Nuclear and High Energy Physics and 1 paper in Statistical and Nonlinear Physics. Recurrent topics in J. Hamann’s work include Cosmology and Gravitation Theories (3 papers), Dark Matter and Cosmic Phenomena (2 papers) and Particle physics theoretical and experimental studies (2 papers). J. Hamann is often cited by papers focused on Cosmology and Gravitation Theories (3 papers), Dark Matter and Cosmic Phenomena (2 papers) and Particle physics theoretical and experimental studies (2 papers). J. Hamann collaborates with scholars based in Denmark, Germany and France. J. Hamann's co-authors include Yvonne Y. Y. Wong, Georg G. Raffelt, Steen Hannestad, Irene Tamborra, D. B. Tanner, Robert S. Womersley, Karl A. van Bibber, Quôc Thông Lê Gia and Ian H. Sloan and has published in prestigious journals such as Journal of Cosmology and Astroparticle Physics, International Journal of Modern Physics C and Nuclear Physics B - Proceedings Supplements.

Co-authorship network of co-authors of J. Hamann

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

J. Hamann

3 papers receiving 49 citations

Fields of papers citing papers by J. Hamann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by J. Hamann

Since Specialization
Citations

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