Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
Enceladus’s measured physical libration requires a global subsurface ocean
2015280 citationsP. C. Thomas, Matthew S. Tiscareno et al.profile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
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Countries citing papers authored by P. Helfenstein
Since
Specialization
Citations
This map shows the geographic impact of P. Helfenstein'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 P. Helfenstein with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. Helfenstein more than expected).
This network shows the impact of papers produced by P. Helfenstein. 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 P. Helfenstein. The network helps show where P. Helfenstein may publish in the future.
Co-authorship network of co-authors of P. Helfenstein
This figure shows the co-authorship network connecting the top 25 collaborators of P. Helfenstein.
A scholar is included among the top collaborators of P. Helfenstein 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 P. Helfenstein. P. Helfenstein is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Schenk, P., B. J. Buratti, P. Helfenstein, S. Kempf, & Jürgen Schmidt. (2017). Colors of Enceladus: Plume Redeposition and Lessons for Europa. Lunar and Planetary Science Conference. 2601.1 indexed citations
4.
Annex, Andrew M., A. Verbiscer, P. Helfenstein, Carly Howett, & P. Schenk. (2013). Photometric Properties of Thermally Anomalous Terrain on Icy Saturnian Satellites. DPS.1 indexed citations
5.
Thomas, P. C., et al.. (2013). Saturn's Mysterious Arc-Embedded Moons: Recycled Fluff?. Lunar and Planetary Science Conference. 1598.2 indexed citations
6.
Giese, B., Hauke Hußmann, P. Helfenstein, P. Thomas, & G. Neukum. (2011). Enceladus: Evidence for librations forced by Dione. elib (German Aerospace Center). 2011. 976.7 indexed citations
7.
Rodríguez, S., S. Charnoz, P. Helfenstein, et al.. (2007). Enceladus Regional Photometric Properties From Iss/cassini Images. 39.1 indexed citations
8.
Hurford, T. A., B. G. Bills, P. Helfenstein, et al.. (2007). Geological Evidence That Enceladus Librates About Synchronous Rotation. DPS. 2007.1 indexed citations
9.
Hurford, T. A., P. Helfenstein, R. Greenberg, & G. V. Hoppa. (2007). A Cycloid-like Rift Near Enceladus' South Pole: Europa-style Production by Tidal Stress. Lunar and Planetary Science Conference. 1844.2 indexed citations
10.
Roatsch, T., et al.. (2006). Mapping of the Icy Saturnian satellites. elib (German Aerospace Center). 21.2 indexed citations
11.
Thomas, P. C., J. Veverka, P. Helfenstein, et al.. (2006). Shapes of the Saturnian Icy Satellites. LPI. 1639.11 indexed citations
12.
Verbiscer, A., R. G. French, & P. Helfenstein. (2005). Saturn's Inner Satellites at True Opposition: Observations During a Central Transit of the Earth Across the Solar Disk. 37.3 indexed citations
13.
Geissler, P. E., Maureen Bell, B. E. Clark, et al.. (1996). Multispectral imaging of Europa from Galileo's G1 encounter. Bulletin of the American Astronomical Society. 28(3). 23–23.1 indexed citations
14.
Fanale, F. P., M. Robinson, R. W. Carlson, et al.. (1993). A Synergistic Imaging Spectroscopy View of 951 Gaspra. 25.2 indexed citations
15.
Helfenstein, P., et al.. (1991). Seeing Through Frost on Triton: Large-Scale Quasi-Circular Features. Bulletin of the American Astronomical Society. 23. 1210.1 indexed citations
16.
Pieters, C. M., et al.. (1991). Bidirectional Spectroscopy of Returned Lunar Soils: Detailed "Ground Truth" for Planetary Remote Sensors. LPI. 22. 1069.20 indexed citations
17.
Helfenstein, P., Jim Hillier, C. M. Weitz, & J. Veverka. (1990). Oberon: Color Photometry and its Geological Implications. Lunar and Planetary Science Conference. 21. 489.1 indexed citations
18.
Helfenstein, P., et al.. (1989). Post-eclipse and Darkside Brightness Variations on Io. Lunar and Planetary Science Conference. 20. 812.1 indexed citations
19.
Helfenstein, P.. (1986). Photometrically Determined Surface Physical Properties of Terrains on Ganymede. LPI. 333–334.4 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.