This map shows the geographic impact of John R. Percy'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 John R. Percy with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John R. Percy more than expected).
This network shows the impact of papers produced by John R. Percy. 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 John R. Percy. The network helps show where John R. Percy may publish in the future.
Co-authorship network of co-authors of John R. Percy
This figure shows the co-authorship network connecting the top 25 collaborators of John R. Percy.
A scholar is included among the top collaborators of John R. Percy 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 John R. Percy. John R. Percy is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
20 of 20 papers shown
1.
Percy, John R., et al.. (2016). An Undergraduate Research Experience on Studying Variable Stars. 44(1). 72.1 indexed citations
2.
Percy, John R.. (2015). Spurious One-Month and One-Year Periods in Visual Observations of Variable Stars. 43(2). 223.1 indexed citations
3.
Percy, John R. & Panpan Tan. (2013). Period Changes in RRc Stars. 41(1). 75.1 indexed citations
4.
Kiss, L. L. & John R. Percy. (2012). Non-Mira Pulsating Red Giants and Supergiants. 40(1). 528.
5.
Percy, John R., et al.. (2011). Studies of "Irregularity" in Pulsating Red Giants. III. Many More Stars, an Overview, and Some Conclusions. 39(1). 1.1 indexed citations
6.
Percy, John R., et al.. (2010). Photometric Variability Properties of 21 T Tauri and Related Stars from AAVSO Visual Observations. 38(2). 151.1 indexed citations
7.
Percy, John R., et al.. (2009). Quantifying Irregularity in Pulsating Red Giants. 37(2). 71.1 indexed citations
8.
Percy, John R. & Hiromitsu Sato. (2009). Long Secondary Periods in Pulsating Red Supergiant Stars. JRASC. 103(1). 11.1 indexed citations
9.
Percy, John R.. (2006). Teaching Astronomy: Why and How?. 35(1). 248–254.12 indexed citations
10.
Percy, John R., et al.. (2001). Periods of 25 Pulsating Red Giants. Information Bulletin on Variable Stars. 5041. 1.
11.
Percy, John R., et al.. (1999). Self-Directed Professional Development for Middle-School Astronomy Teachers. American Astronomical Society Meeting Abstracts. 195.1 indexed citations
12.
Percy, John R., et al.. (1998). Pulsation Modes in M Giants. ASPC. 135. 249.
13.
Percy, John R., et al.. (1996). Long-Term Changes in Mira Stars. American Astronomical Society Meeting Abstracts. 189.2 indexed citations
14.
Percy, John R., J. A. Mattei, & C. Sterken. (1992). Variable star research : an international perspective. Cambridge University Press eBooks.9 indexed citations
15.
Percy, John R.. (1990). An Astronomical Research Experience for Gifted High School Students. JRASC. 84. 49.1 indexed citations
16.
Burki, G., E. G. Schmidt, A. Arellano Ferro, et al.. (1986). Intercontinental simultaneous survey of the unique Cepheid HR 7308 in photometry and radial velocity. Insecta mundi. 168. 139–146.3 indexed citations
17.
Percy, John R.. (1977). General Assembly Papers. JRASC. 71.
18.
Percy, John R., et al.. (1976). Studies of 12 (DD) Lacertae. Journal of the Royal Astronomical Society of Canada. 70. 213.1 indexed citations
19.
Percy, John R.. (1975). Photometric Observations of Suspected Small-Amplitude Cepheids. Information Bulletin on Variable Stars. 983. 1.1 indexed citations
20.
Percy, John R.. (1973). A Search for Delta Scuti Stars. Journal of the Royal Astronomical Society of Canada. 67. 139.1 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.