This map shows the geographic impact of R. A. Koff'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 R. A. Koff with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. A. Koff more than expected).
This network shows the impact of papers produced by R. A. Koff. 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 R. A. Koff. The network helps show where R. A. Koff may publish in the future.
Co-authorship network of co-authors of R. A. Koff
This figure shows the co-authorship network connecting the top 25 collaborators of R. A. Koff.
A scholar is included among the top collaborators of R. A. Koff 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 R. A. Koff. R. A. Koff is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Zhang, Kaicheng, Li Zhou, Juncheng Chen, et al.. (2013). Supernova 2013ca in Pgc 37698 = Psn J11584325+1908562. 3508. 1.1 indexed citations
6.
Zhang, Kaicheng, Li Zhou, Xiaofeng Wang, et al.. (2013). Supernova 2013bf = Psn J08583607+5419257. 3471. 1.
7.
Zhang, Tianmeng, Li Zhou, Xiaofeng Wang, et al.. (2013). Supernova 2013ar = Psn J08374502+4928322. 3446. 1.1 indexed citations
8.
Koff, R. A., et al.. (2012). Supernova 2012A in NGC 3239 = Psn J10250739+1709146. 2974. 2.1 indexed citations
9.
Grenier, Adeline, Guochao Sun, X. Gao, et al.. (2011). Supernova 2011dh in M51 = Psn J13303600+4706330. 2736. 1.3 indexed citations
10.
Ciabattari, F., R. A. Koff, L. Tomasella, et al.. (2011). Supernova 2011it in Pgc 67911 = Psn J22024445+3141491. 2938. 1.1 indexed citations
11.
Boyd, D., et al.. (2010). CCD photometry of the first observed superoutburst of KP Cassiopeiae in 2008 October. Journal of the British Astronomical Association. 120. 33–39.
12.
Olech, A., et al.. (2007). Curious Variables Experiment (CURVE). CCD Photometry of V419 Lyr in its 2006 July Superoutburst. Acta Astronomica. 57. 267–279.1 indexed citations
13.
Terrell, D., R. A. Koff, A. A. Henden, et al.. (2005). Photometric Variability in the Strongly Interacting Binary DK Canum Venaticorum. IBVS. 5642. 1.1 indexed citations
14.
Koff, R. A.. (2002). Lightcurve Photometry of 492 Gismonda, 1046 Edwin, and 1310 Villigera. The Minor planet bulletin. 29. 25–26.
15.
Stephens, Robert D., et al.. (2001). New Period Determination for 27 Euterpe, a Collaborative Project. 28. 1–2.
16.
Koff, R. A., et al.. (2001). Lightcurve Photometry of Asteroid 490 Veritas. The Minor planet bulletin. 28. 67.1 indexed citations
17.
Koff, R. A., et al.. (2001). Lightcurve Photometry of Asteroid 391 Ingeborg. The Minor planet bulletin. 28. 46–48.1 indexed citations
18.
Koff, R. A.. (2001). Lightcurve Photometry of 611 Valeria and 986 Amelia. The Minor planet bulletin. 28. 77–78.
19.
Koff, R. A., et al.. (2000). Collaborative Asteroid Photometry of Thee Main Belt Asteroids. The Minor planet bulletin. 27. 49–50.
20.
Dalcanton, Julianne J., Sadanori Okamura, G. V. Williams, et al.. (1999). Comet C/1999 F2. IAUC. 7194. 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.