This map shows the geographic impact of Les Johnson'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 Les Johnson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Les Johnson more than expected).
This network shows the impact of papers produced by Les Johnson. 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 Les Johnson. The network helps show where Les Johnson may publish in the future.
Co-authorship network of co-authors of Les Johnson
This figure shows the co-authorship network connecting the top 25 collaborators of Les Johnson.
A scholar is included among the top collaborators of Les Johnson 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 Les Johnson. Les Johnson is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Akhavan‐Tafti, Mojtaba, Les Johnson, Rohan Sood, et al.. (2023). Space weather investigation Frontier (SWIFT). Frontiers in Astronomy and Space Sciences. 10.7 indexed citations
Gilchrist, Brian, et al.. (2017). Electrodynamic Tethers and E-Sails as Active Experiment Testbeds and Technologies in Space. AGUFM. 2017.1 indexed citations
8.
Korth, H., et al.. (2016). Closure of Birkeland Currents at Mercury: Constraints on the Electrical Conductivity of the Crust and Mantle. LPI. 1243.1 indexed citations
Johnson, Les & Catherine Constable. (2009). Biases in Time-Averaged Field and Paleosecular Variation Studies. AGUFM. 2009.1 indexed citations
11.
Bills, B. G., et al.. (2008). Influence of Earth-Moon Orbit Geometry on Deep Moonquake Occurrence Times. Lunar and Planetary Science Conference. 1735.2 indexed citations
12.
Uno, Hiromi, et al.. (2008). Chronology of Lunar Magnetism Revisited. Lunar and Planetary Science Conference. 2494.1 indexed citations
13.
Johnson, Les, et al.. (2007). Helios and Prometheus - A Solar-Nuclear Outer-Solar System Mission. JBIS. 60. 439–442.5 indexed citations
14.
Johnson, Les, et al.. (2006). Recent Advances in Solar Sail Propulsion at NASA. NASA Technical Reports Server (NASA).
15.
Johnson, Les, et al.. (2005). A Strategic Roadmap to Centauri. NASA STI Repository (National Aeronautics and Space Administration). 58. 316–325.
16.
Matloff, Gregory L. & Les Johnson. (2005). Applications of the Electrodynamic Tether to Interstellar Travel. Journal of the British Interplanetary Society. 58. 398–402.3 indexed citations
17.
Montgomery, Edward & Les Johnson. (2004). Development of Solar Sail Propulsion for Inner Solar System NASA Science Missions. 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit.5 indexed citations
18.
Johnson, Les, et al.. (2003). Propulsive Small Expendable Deployer System (ProSEDS) Experiment: Mission Overview & Status. Deep Blue (University of Michigan).
19.
Johnson, Les & Sean C. Solomon. (1996). Variations in Lithospheric Properties on Venus from Coronae and Chasmata. LPI. 27. 607.1 indexed citations
20.
Johnson, Les, et al.. (1992). Mitigation of adverse environmental effects on lunar-based astronomical instruments. NASA Technical Reports Server (NASA). 2. 1–1841.
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.