J. Hardorp

479 total citations
29 papers, 303 citations indexed

About

J. Hardorp is a scholar working on Astronomy and Astrophysics, Instrumentation and Computational Mechanics. According to data from OpenAlex, J. Hardorp has authored 29 papers receiving a total of 303 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Astronomy and Astrophysics, 9 papers in Instrumentation and 5 papers in Computational Mechanics. Recurrent topics in J. Hardorp's work include Stellar, planetary, and galactic studies (18 papers), Astro and Planetary Science (12 papers) and Astronomy and Astrophysical Research (9 papers). J. Hardorp is often cited by papers focused on Stellar, planetary, and galactic studies (18 papers), Astro and Planetary Science (12 papers) and Astronomy and Astrophysical Research (9 papers). J. Hardorp collaborates with scholars based in United States. J. Hardorp's co-authors include R. Giacconi, P. A. Strittmatter, S. Vauclair, Markus Scholz, D. M. Peterson, M. Scholz, J. C. Brandt, M. Breger, J. Tomkin and Th. Schmidt‐Kaler and has published in prestigious journals such as The Astrophysical Journal, The Astrophysical Journal Supplement Series and American Journal of Physics.

In The Last Decade

J. Hardorp

26 papers receiving 277 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J. Hardorp United States	9	285	43	41	30	27	29	303
C. Blanco Italy	10	302 1.1×	24 0.6×	29 0.7×	38 1.3×	19 0.7×	60	313
C. T. Kowal United States	12	371 1.3×	57 1.3×	33 0.8×	21 0.7×	24 0.9×	44	392
Linda M. French United States	7	338 1.2×	46 1.1×	35 0.9×	25 0.8×	34 1.3×	32	359
R. E. McCrosky United States	12	615 2.2×	22 0.5×	62 1.5×	75 2.5×	40 1.5×	39	656
P. V. Noah United States	7	432 1.5×	37 0.9×	76 1.9×	42 1.4×	57 2.1×	21	445
D. Malaise France	6	280 1.0×	9 0.2×	42 1.0×	32 1.1×	18 0.7×	14	298
E. E. Epstein United States	12	321 1.1×	18 0.4×	12 0.3×	45 1.5×	11 0.4×	49	361
J. S. Neff United States	11	291 1.0×	27 0.6×	11 0.3×	65 2.2×	51 1.9×	36	355
D. Pascu United States	10	423 1.5×	33 0.8×	12 0.3×	55 1.8×	14 0.5×	48	466
A. V. Holm United States	11	279 1.0×	38 0.9×	6 0.1×	20 0.7×	22 0.8×	33	304

Countries citing papers authored by J. Hardorp

Since Specialization

Citations

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

Fields of papers citing papers by J. Hardorp

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. Hardorp

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

All Works

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20 of 20 papers shown

1.

Hardorp, J.. (1987). Kepler’s law and the falling Earth. American Journal of Physics. 55(3). 201–201. 1 indexed citations

2.

Hardorp, J.. (1985). A Demonstration of the Sun's Motion around the Barycenter of the Solar System. Bulletin of the American Astronomical Society. 17. 592. 1 indexed citations

3.

Hardorp, J. & J. Tomkin. (1983). The sun among the stars. VII: The Hα profile of the sun and the solar analog 16 Cygni B. 127(2). 277–278. 1 indexed citations

4.

Hardorp, J.. (1982). The sun among the stars. V. A second search for solar spectral analogs. The Hyades' distance.. 105. 120–132. 16 indexed citations

5.

Hardorp, J. & R. Giacconi. (1981). The Sun among the Stars. Sky and Telescope. 61. 106. 41 indexed citations

6.

Hardorp, J.. (1980). The Sun among the stars. III. Energy distributions of 16 northern G-type stars and the solar flux calibration.. A&A. 91. 221–232. 32 indexed citations

7.

Hardorp, J.. (1978). The sun among the stars. I. A search for solar spectral analogs.. 63. 383–390. 64 indexed citations

8.

Hardorp, J.. (1977). Do metallic-line stars have extended atmospheres ?. The Astrophysical Journal. 214. 408–408. 1 indexed citations

9.

Hardorp, J.. (1976). The Energy Distribution of Several Ap Stars. International Astronomical Union Colloquium. 32. 627–632. 4 indexed citations

10.

Hardorp, J., S. N. Shore, & A. Wittmann. (1976). Line Formation with Magnetic Field: Review and Practical Applications. International Astronomical Union Colloquium. 32. 419–433. 1 indexed citations

11.

Hardorp, J.. (1974). Rotation in late stages of stellar evolution. 32. 133–136. 2 indexed citations

12.

Hardorp, J. & M. Scholz. (1971). The effect of rapid rotation on radiation from stars. III. Strong helium I lines.. 13(6). 353–7. 3 indexed citations

13.

Hardorp, J.. (1971). Angular Momentum and Short-Term Directional Fluctuations of the Solar Wind from VELA 3 Data. 14. 210. 1 indexed citations

14.

Hardorp, J., et al.. (1971). Determination of the abundances of the rare earths in the AP star betCrB.. Publications of the Astronomical Society of the Pacific. 83. 605–605. 4 indexed citations

15.

Breger, M. & J. Hardorp. (1971). A Photometric Search for Circumstellar Shell Variability and Pre-Main Sequence Delta Scuti Variables. International Astronomical Union Colloquium. 15. 85–89.

16.

Hardorp, J. & Markus Scholz. (1970). The Atmospheres of Tau Scorpii (B0 v) and Lambda Leporis (B0.5 W). The Astrophysical Journal Supplement Series. 19. 193–193. 27 indexed citations

17.

Hardorp, J. & P. A. Strittmatter. (1968). The Effect of Rapid Rotation on Radiation from Stars. II. The Absorption Lines. The Astrophysical Journal. 153. 465–465. 19 indexed citations

18.

Hardorp, J. & P. A. Strittmatter. (1968). The effect of rotation on radiation from stars. I.. NASA Technical Reports Server (NASA). 1 indexed citations

19.

Hardorp, J., et al.. (1964). Luminous Stars in the Northern Milky Way. 0. 3 indexed citations

20.

Hardorp, J., K. Rohlfs, Arne Slettebak, & J. Stock. (1959). Luminous stars in the Northern Milky Way. Part I.. 0. 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.

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