This map shows the geographic impact of H. Schwan'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 H. Schwan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. Schwan more than expected).
This network shows the impact of papers produced by H. Schwan. 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 H. Schwan. The network helps show where H. Schwan may publish in the future.
Co-authorship network of co-authors of H. Schwan
This figure shows the co-authorship network connecting the top 25 collaborators of H. Schwan.
A scholar is included among the top collaborators of H. Schwan 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 H. Schwan. H. Schwan is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Wielen, R., et al.. (2000). Sixth Catalogue of Fundamental Stars (FK6). Part III. Additional fundamental stars with direct solutions. 37. 1.4 indexed citations
10.
Wielen, R., et al.. (1999). Indications on the binary nature of individual stars derived from a comparison of their HIPPARCOS proper motions with ground-based data.1 indexed citations
11.
Wielen, R., et al.. (1999). Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions.. 35. 1.9 indexed citations
12.
Biermann, Peter L., Gerhard Börner, M. Camenzind, et al.. (1999). Landolt-Börnstein: Numerical Data and Functional Relationships in Science and Technology - New Series¬Gruppe/Group 6 Astronomy and Astrophysics¬Volume 3 Voigt: Extension and Supplement to Volume 2¬Interstellar Matter, Galaxy, Universe.1 indexed citations
13.
Wielen, R., et al.. (1998). The Sixth Catalogue of Fundamental Stars (FK6) and the problem of double stars. CERN Bulletin. 3. 123–132.3 indexed citations
Schwan, H.. (1991). The distance and main sequence of the Hyades cluster based on 145 stars with highly accurate proper motions obtained from work on the catalogues FK 5 and PPM. 243(2). 386–400.5 indexed citations
16.
Schwan, H.. (1988). A computer program for evaluating the analytical representation of the systematic differences between the FK4 and the FK5 or other catalogues of star positions or proper motions. 198. 363–364.
Schwan, H.. (1983). A Method for the Determination of a System of Positions and Proper Motions of Stars with an Application to the Washington 6 Inch TC Observations. OpenGrey (Institut de l'Information Scientifique et Technique). 30. 1.1 indexed 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.