This map shows the geographic impact of J. Heidmann'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. Heidmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. Heidmann more than expected).
This network shows the impact of papers produced by J. Heidmann. 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. Heidmann. The network helps show where J. Heidmann may publish in the future.
Co-authorship network of co-authors of J. Heidmann
This figure shows the co-authorship network connecting the top 25 collaborators of J. Heidmann.
A scholar is included among the top collaborators of J. Heidmann 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. Heidmann. J. Heidmann is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Heidmann, J.. (1994). What Legal Questions Are Raised by the Establishment of a Dedicated Lunar Far Side Specific Crater for High Sensitivity Radioastronomy. International Institute of Space Law. 37. 9.1 indexed citations
Heidmann, J. & M. J. Klein. (1991). Bioastronomy : the search for extraterrestrial life - the exploration broadens : proceedings of the Third International Symposium on Bioastronomy, held at Val Cenis, Savoie, France, 18-23 June 1990. Springer eBooks.3 indexed citations
Heidmann, J., et al.. (1984). La cosmologie moderne..2 indexed citations
11.
Barbieri, C., et al.. (1978). Investigation of galaxies from Vorontsov-Vel'yaminov's second atlas.. Astronomy & Astrophysics Supplement Series. 37. 559.
12.
Heidmann, J., et al.. (1978). Morphology of pairs containing one Markarian and one normal galaxy.. Astronomy & Astrophysics Supplement Series. 34. 91–116.3 indexed citations
13.
Heidmann, J., et al.. (1976). Morphological study of Markarian galaxies in pairs. II. Morphological data. Astronomy & Astrophysics Supplement Series. 24. 473.1 indexed citations
14.
Heidmann, J., et al.. (1976). Morphological study of Markarian galaxies in pairs. I: Results.. A&A. 47. 371–373.
Balkowski, C., et al.. (1974). Neutral Hydrogen study of spiral and irregular dwarf galaxies. MmSAI. 34. 43–52.1 indexed citations
17.
Arp, Halton, et al.. (1974). Remarkable pairs of double galaxies.. 10. 7–12.
18.
Heidmann, J., et al.. (1972). Inclination and absorption effects on the apparent diameters, optical luminosities and neutral hydrogen radiation of galaxies—I. Optical and 21-cm line data. 75. 85.8 indexed citations
19.
Heidmann, J., et al.. (1972). Inclination and absorption effects on the apparent diameters, optical luminosities and neutral hydrogen radiation of galaxies—III. Theory and applications. 75. 121.
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.