This map shows the geographic impact of M. Sigwarth'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 M. Sigwarth with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites M. Sigwarth more than expected).
This network shows the impact of papers produced by M. Sigwarth. 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 M. Sigwarth. The network helps show where M. Sigwarth may publish in the future.
Co-authorship network of co-authors of M. Sigwarth
This figure shows the co-authorship network connecting the top 25 collaborators of M. Sigwarth.
A scholar is included among the top collaborators of M. Sigwarth 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 M. Sigwarth. M. Sigwarth is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Kentischer, T., W. Schmidt, O. von der Lühe, et al.. (2012). The visible tunable filtergraph for the ATST. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8446. 844677–844677.13 indexed citations
Rimmelé, Thomas, Tom Berger, D. Elmore, et al.. (2005). First-Light Instrumentation for the Advanced Technology Solar Telescope. AGU Spring Meeting Abstracts. 2005.1 indexed citations
Elmore, David, B. W. Lites, M. Sigwarth, et al.. (2003). Diffraction-limited spectropolarimeter: Phase I. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 4843. 414–414.11 indexed citations
Sigwarth, M.. (2001). Advanced Solar Polarimetry -- Theory, Observation, and Instrumentation -- 20TH NSO/Sac Summer Workshop. 236.3 indexed citations
18.
Sigwarth, M., Krishnan Balasubramaniam, M. Knölker, & W. Schmidt. (1999). Dynamics of solar magnetic elements. 349(3). 941–955.11 indexed citations
19.
Schmidt, W. & M. Sigwarth. (1998). TESOS, a double Fabry-Perot instrument for solar spectroscopy. 340(2). 569–578.23 indexed citations
20.
Sigwarth, M. & W. Mattig. (1997). VELOCITY AND INTENSITY OSCILLATIONS IN SUNSPOT PENUMBRAE. FreiDok plus (Universitätsbibliothek Freiburg). 324(2). 743–749.12 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.