C. J. Hansen

4.3k total citations · 1 hit paper
88 papers, 1.9k citations indexed

About

C. J. Hansen is a scholar working on Astronomy and Astrophysics, Instrumentation and Nuclear and High Energy Physics. According to data from OpenAlex, C. J. Hansen has authored 88 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 71 papers in Astronomy and Astrophysics, 28 papers in Instrumentation and 20 papers in Nuclear and High Energy Physics. Recurrent topics in C. J. Hansen's work include Stellar, planetary, and galactic studies (62 papers), Astrophysics and Star Formation Studies (29 papers) and Astronomy and Astrophysical Research (28 papers). C. J. Hansen is often cited by papers focused on Stellar, planetary, and galactic studies (62 papers), Astrophysics and Star Formation Studies (29 papers) and Astronomy and Astrophysical Research (28 papers). C. J. Hansen collaborates with scholars based in Germany, United States and France. C. J. Hansen's co-authors include H. M. van Horn, Andreas Koch, Almudena Arcones, M. Bergemann, Á. Skúladóttir, N. Christlieb, Terese T. Hansen, Vinicius M. Placco, Timothy C. Beers and Anja C. Andersen and has published in prestigious journals such as Nature, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

C. J. Hansen

82 papers receiving 1.8k citations

Hit Papers

Identification of stronti... 2019 2026 2021 2023 2019 50 100 150 200 250
What are hit papers?

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.

  1. Identification of strontium in the merger of two neutron stars
    2019 281 citations C. J. Hansen, Andreas Koch et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
C. J. Hansen Germany 24 1.7k 522 414 131 100 88 1.9k
Fritz J. Swenson United States 11 889 0.5× 264 0.5× 312 0.8× 114 0.9× 152 1.5× 24 1.2k
Shinya Wanajo Japan 29 2.4k 1.4× 228 0.4× 1.3k 3.1× 99 0.8× 93 0.9× 75 2.7k
S. Cristallo Italy 28 2.3k 1.3× 520 1.0× 793 1.9× 191 1.5× 109 1.1× 104 2.6k
Ian U. Roederer United States 27 2.1k 1.2× 785 1.5× 417 1.0× 58 0.4× 109 1.1× 89 2.2k
L. Mashonkina Russia 26 1.7k 1.0× 638 1.2× 370 0.9× 73 0.6× 117 1.2× 88 1.9k
Carl J. Hansen United States 19 1.1k 0.6× 212 0.4× 248 0.6× 169 1.3× 78 0.8× 50 1.3k
E. M. Sion United States 29 3.3k 2.0× 670 1.3× 299 0.7× 232 1.8× 76 0.8× 227 3.4k
Inese I. Ivans United States 30 3.0k 1.8× 1.1k 2.1× 725 1.8× 58 0.4× 174 1.7× 53 3.2k
É. Depagne United States 24 2.9k 1.7× 1.2k 2.3× 435 1.1× 56 0.4× 89 0.9× 42 3.0k
G. Sonneborn United States 31 2.9k 1.7× 317 0.6× 575 1.4× 85 0.6× 140 1.4× 128 3.0k

Countries citing papers authored by C. J. Hansen

Since Specialization
Citations

This map shows the geographic impact of C. J. Hansen'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 C. J. Hansen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites C. J. Hansen more than expected).

Fields of papers citing papers by C. J. Hansen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by C. J. Hansen. 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 C. J. Hansen. The network helps show where C. J. Hansen may publish in the future.

Co-authorship network of co-authors of C. J. Hansen

This figure shows the co-authorship network connecting the top 25 collaborators of C. J. Hansen. A scholar is included among the top collaborators of C. J. Hansen 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 C. J. Hansen. C. J. Hansen 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.
Hansen, C. J., L. Mashonkina, P. Bonifacio, et al.. (2024). Chemical Evolution of R-process Elements in Stars (CERES). Astronomy and Astrophysics. 693. A293–A293. 5 indexed citations
2.
Romano, D., et al.. (2024). Chemical Evolution of R-process Elements in Stars (CERES). Astronomy and Astrophysics. 691. A220–A220. 5 indexed citations
3.
Hansen, C. J., Almudena Arcones, Moritz Reichert, et al.. (2024). Chemical Evolution of R-process Elements in Stars (CERES). Astronomy and Astrophysics. 693. A294–A294. 6 indexed citations
4.
Gögenür, Ismail, C. J. Hansen, Lene T. Kirkeby, et al.. (2022). Colorectal cancer-associated SNP rs17042479 is involved in the regulation of NAF1 promoter activity. PLoS ONE. 17(9). e0274033–e0274033. 1 indexed citations
5.
Hansen, C. J., H.‐G. Ludwig, S. Cristallo, et al.. (2020). A high-precision abundance analysis of the nuclear benchmark star HD 20. Springer Link (Chiba Institute of Technology). 14 indexed citations
6.
Hansen, C. J., Andreas Koch, L. Mashonkina, et al.. (2020). Mono-enriched stars and Galactic chemical evolution. Astronomy and Astrophysics. 643. A49–A49. 16 indexed citations
7.
Koch, Andreas, Moritz Reichert, C. J. Hansen, et al.. (2019). . Springer Link (Chiba Institute of Technology). 21 indexed citations
8.
Skúladóttir, Á., C. J. Hansen, Stefania Salvadori, & A. Choplin. (2019). Neutron-capture elements in dwarf galaxies. I. Chemical clocks and the short timescale of the r-process. Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles). 12 indexed citations
9.
Hansen, C. J., A. R. Hendrix, & L. W. Esposito. (2018). Observations of Stellar Occultations to Look for Plumes from Dione and Tethys. Lunar and Planetary Science Conference. 2446. 1 indexed citations
10.
Koch, Andreas, C. J. Hansen, & Andrea Kunder. (2017). . Springer Link (Chiba Institute of Technology). 7 indexed citations
11.
Hansen, C. J., et al.. (2017). Something borrowed, something blue: The nature of blue metal-poor stars inferred from their colours and chemical abundances. Springer Link (Chiba Institute of Technology). 2 indexed citations
12.
Hansen, C. J., M. Bergemann, G. Cescutti, et al.. (2015). LTE or non-LTE, that is the question: The NLTE chemical evolution of strontium in extremely metal-poor stars. ANU Open Research (Australian National University). 47 indexed citations
13.
Cordero, M. J., C. J. Hansen, Christian I. Johnson, & C. A. Pilachowski. (2015). A COMPARATIVE STUDY OF TWO 47 Tuc GIANT STARS WITH DIFFERENT s-PROCESS ENRICHMENT. The Astrophysical Journal Letters. 808(1). L10–L10. 6 indexed citations
14.
Hansen, C. J., Anja C. Andersen, & N. Christlieb. (2014). Stellar abundances and presolar grains trace the nucleosynthetic origin of molybdenum and ruthenium. Springer Link (Chiba Institute of Technology). 15 indexed citations
15.
Hansen, C. J., et al.. (2013). Mars' Seasonal Fans Measured by Citizen Scientists. European Planetary Science Congress. 2 indexed citations
16.
Hansen, C. J., F. Primas, H. Hartman, et al.. (2012). Silver and palladium help unveil the nature of a second r-process. Springer Link (Chiba Institute of Technology). 57 indexed citations
17.
Bergemann, M., C. J. Hansen, M. A. Bautista, & G. Ruchti. (2012). NLTE analysis of Sr lines in spectra of late-type stars with new R-matrix atomic data. Springer Link (Chiba Institute of Technology). 33 indexed citations
18.
Hansen, C. J., B. Nordström, P. Bonifacio, et al.. (2010). First stars. Astronomy and Astrophysics. 527. A65–A65. 29 indexed citations
19.
Fritts, M. J., et al.. (1974). Thick-target measurement of the (p,$gamma$) stellar reaction rates on the nuclides $sup 12$C, $sup 29$Si, $sup 46$Ti, $sup 47$Ti, and $sup 56$Fe. The Astrophysical Journal. 1 indexed citations
20.
Hansen, C. J., J. P. Cox, & M. Herz. (1970). SECULAR STABILITY OF PURE HELIUM STARS.. Bulletin of the American Astronomical Society. 19. 144.

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.

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