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.
The Ensemble Properties of Comets: Results from Narrowband Photometry of 85 Comets, 1976-1992
1995678 citationsMichael F. A’Hearn, R. Millis et al.Icarusprofile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
hero ref
This map shows the geographic impact of P. V. Birch'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. V. Birch with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. V. Birch more than expected).
This network shows the impact of papers produced by P. V. Birch. 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. V. Birch. The network helps show where P. V. Birch may publish in the future.
Co-authorship network of co-authors of P. V. Birch
This figure shows the co-authorship network connecting the top 25 collaborators of P. V. Birch.
A scholar is included among the top collaborators of P. V. Birch 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. V. Birch. P. V. Birch is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Lennerfors, Thomas Taro & P. V. Birch. (2019). Snow in the Tropics. Directory of Open access Books (OAPEN Foundation).2 indexed citations
3.
Schleicher, D. G., et al.. (2006). The Composition of the Interior of Comet 73P/Schwassmann-Wachmann 3: Results from Narrowband Photometry of Multiple Components. DPS.3 indexed citations
Albrow, Michael D., P. V. Birch, J. A. R. Caldwell, et al.. (1995). PLANET (Probing Lensing Anomalies NETwork). AAS. 187.1 indexed citations
8.
A’Hearn, Michael F., R. Millis, D. G. Schleicher, D. J. Osip, & P. V. Birch. (1995). The Ensemble Properties of Comets: Results from Narrowband Photometry of 85 Comets, 1976-1992. Icarus. 118(2). 223–270.678 indexed citations breakdown →
9.
Osip, D. J., D. G. Schleicher, R. L. Millis, M. F. A’Hearn, & P. V. Birch. (1992). Cometary Dust: Narrowband Photometry of 84 Comets. 24.1 indexed citations
Schleicher, D. G., R. L. Millis, D. J. Osip, M. F. A’Hearn, & P. V. Birch. (1989). Thirteen Years of Comet Photometry. Bulletin of the American Astronomical Society. 21. 936.2 indexed citations
12.
Birch, P. V. & Ronald C. Taylor. (1989). Lightcurves and pole position of asteroid 3 Juno. Astronomy & Astrophysics Supplement Series. 81(3). 409–414.1 indexed citations
13.
Schleicher, D. G., R. L. Millis, D. J. Tholen, et al.. (1987). The Variability of Comet Halley During the 1985/1986 Apparition. Bulletin of the American Astronomical Society. 19. 879.2 indexed citations
14.
A’Hearn, Michael F., et al.. (1986). Gaseous jets in Comet P/Halley. ESASP. 250. 483–486.16 indexed citations
15.
A’Hearn, Michael F., et al.. (1986). Cyanogen jets in comet Halley. Nature. 324(6098). 649–651.164 indexed citations
Surdej, Jean, et al.. (1983). Photoelectric lightcurves and rotation period of the minor planet 201 Penelope. Open Repository and Bibliography (University of Liège).8 indexed citations
Elliot, J. L., Edward W. Dunham, Jessica Mink, et al.. (1977). Occultation of SAO 158687 by Uranus and Satellite Belt. International Astronomical Union Circular. 3048. 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.