F. Middelkoop

757 total citations
7 papers, 416 citations indexed

About

F. Middelkoop is a scholar working on Astronomy and Astrophysics, Instrumentation and Computational Mechanics. According to data from OpenAlex, F. Middelkoop has authored 7 papers receiving a total of 416 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Astronomy and Astrophysics, 4 papers in Instrumentation and 2 papers in Computational Mechanics. Recurrent topics in F. Middelkoop's work include Stellar, planetary, and galactic studies (6 papers), Astro and Planetary Science (4 papers) and Astronomy and Astrophysical Research (4 papers). F. Middelkoop is often cited by papers focused on Stellar, planetary, and galactic studies (6 papers), Astro and Planetary Science (4 papers) and Astronomy and Astrophysical Research (4 papers). F. Middelkoop collaborates with scholars based in . F. Middelkoop's co-authors include Lee Hartmann, George W. Preston, R. W. Noyes, Dimitri Mihalas, A. H. Vaughan, H. H. Lanning, James George Frazer, C. Zwaan, S. L. Baliunas and J. Mueller and has published in prestigious journals such as The Astrophysical Journal, The Astrophysical Journal Supplement Series and A&A.

In The Last Decade

F. Middelkoop

7 papers receiving 391 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
F. Middelkoop	5	410	140	16	11	10	7	416
L. Woodard	2	299 0.7×	110 0.8×	10 0.6×	8 0.7×	12 1.2×	4	305
J. Mueller Germany	3	307 0.7×	109 0.8×	11 0.7×	8 0.7×	11 1.1×	3	318
G. A. Verner United Kingdom	8	256 0.6×	98 0.7×	5 0.3×	6 0.5×	13 1.3×	12	261
G. A. Wade Canada	8	464 1.1×	117 0.8×	10 0.6×	5 0.5×	28 2.8×	28	470
P. L. Dufton United Kingdom	10	545 1.3×	250 1.8×	4 0.3×	7 0.6×	24 2.4×	19	553
T. Lueftinger Austria	7	226 0.6×	78 0.6×	9 0.6×	8 0.7×	10 1.0×	16	230
J. E. Solheim Norway	9	275 0.7×	106 0.8×	6 0.4×	3 0.3×	20 2.0×	29	287
Hisashi Koyano Japan	8	236 0.6×	83 0.6×	4 0.3×	4 0.4×	12 1.2×	16	242
O. Kochukhov Sweden	8	338 0.8×	108 0.8×	11 0.7×	3 0.3×	15 1.5×	10	338
J. Kovács Hungary	7	246 0.6×	60 0.4×	7 0.4×	5 0.5×	8 0.8×	16	251

Countries citing papers authored by F. Middelkoop

Since Specialization

Citations

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

Fields of papers citing papers by F. Middelkoop

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by F. Middelkoop. 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 F. Middelkoop. The network helps show where F. Middelkoop may publish in the future.

Co-authorship network of co-authors of F. Middelkoop

This figure shows the co-authorship network connecting the top 25 collaborators of F. Middelkoop. A scholar is included among the top collaborators of F. Middelkoop 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 F. Middelkoop. F. Middelkoop is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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7 of 7 papers shown

1.

Duncan, D. K., A. H. Vaughan, O. C. Wilson, et al.. (1991). CA II H and K measurements made at Mount Wilson Observatory, 1966-1983. The Astrophysical Journal Supplement Series. 76. 383–383. 252 indexed citations

2.

Baliunas, S. L., Lee Hartmann, George W. Preston, et al.. (1983). Stellar rotation in lower main-sequence stars measured from time variations in H and K emission-line fluxes. II - Detailed analysis of the 1980 observing season data. The Astrophysical Journal. 275. 752–752. 55 indexed citations

3.

Zwaan, C., et al.. (1982). Magnetic structure in cool stars. V. Chronospheric and transition-region emission from giants.. 110. 30–36. 3 indexed citations

4.

Middelkoop, F.. (1982). Magnetic structure in cool stars. IV - Rotation and CA II H and K emission of main-sequence stars. 107(1). 31–35. 10 indexed citations

5.

Middelkoop, F.. (1981). Magnetic structure in cool stars.. A&A. 101. 295–298. 2 indexed citations

6.

Vaughan, A. H., George W. Preston, S. L. Baliunas, et al.. (1981). Stellar rotation in lower main-sequence stars measured from time variations in H and K emission-line fluxes. I - Initial results. The Astrophysical Journal. 250. 276–276. 86 indexed citations

7.

Middelkoop, F. & C. Zwaan. (1981). Magnetic structure in cool stars. I. The CA II H and K emission from giants.. 101. 26. 8 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.

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