D. B. Shaffer

3.0k total citations · 1 hit paper
68 papers, 1.8k citations indexed

About

D. B. Shaffer is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Computational Mechanics. According to data from OpenAlex, D. B. Shaffer has authored 68 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 52 papers in Astronomy and Astrophysics, 33 papers in Nuclear and High Energy Physics and 15 papers in Computational Mechanics. Recurrent topics in D. B. Shaffer's work include Astrophysics and Cosmic Phenomena (33 papers), Radio Astronomy Observations and Technology (33 papers) and Astronomical Observations and Instrumentation (15 papers). D. B. Shaffer is often cited by papers focused on Astrophysics and Cosmic Phenomena (33 papers), Radio Astronomy Observations and Technology (33 papers) and Astronomical Observations and Instrumentation (15 papers). D. B. Shaffer collaborates with scholars based in United States, Germany and Australia. D. B. Shaffer's co-authors include K. I. Kellermann, Maarten Schmidt, R. A. Sramek, M. H. Cohen, B. G. Clark, D. L. Jauncey, G. H. Purcell, I. I. K. Pauliny‐Toth, Chao Ma and B. J. Geldzahler and has published in prestigious journals such as Nature, Journal of Geophysical Research Atmospheres and The Astrophysical Journal.

In The Last Decade

D. B. Shaffer

64 papers receiving 1.6k citations

Hit Papers

align trajectories

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.

VLA observations of objects in the Palomar Bright Quasar Survey

1989 772 citations K. I. Kellermann, D. B. Shaffer et al. The Astronomical Journal profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
D. B. Shaffer United States	17	1.6k	1.0k	160	159	132	68	1.8k
Ο. B. Slee Australia	20	1.8k 1.1×	802 0.8×	174 1.1×	113 0.7×	53 0.4×	129	1.9k
R. F. Haynes Australia	21	1.8k 1.1×	796 0.8×	171 1.1×	67 0.4×	46 0.3×	99	1.9k
P. A. G. Scheuer United Kingdom	23	1.8k 1.2×	1.2k 1.2×	129 0.8×	85 0.5×	46 0.3×	63	2.0k
D. A. Frail United States	20	2.2k 1.4×	883 0.9×	187 1.2×	59 0.4×	78 0.6×	45	2.2k
J. E. J. Lovell Australia	26	1.9k 1.2×	1.3k 1.3×	73 0.5×	146 0.9×	123 0.9×	125	2.0k
I. I. K. Pauliny‐Toth United States	19	1.5k 0.9×	1.1k 1.1×	93 0.6×	129 0.8×	57 0.4×	93	1.6k
J. A. Eilek United States	24	1.9k 1.2×	1.2k 1.2×	124 0.8×	47 0.3×	28 0.2×	65	2.0k
R. W. Hunstead Australia	30	3.0k 1.9×	1.4k 1.4×	304 1.9×	43 0.3×	51 0.4×	107	3.0k
R. C. Walker United States	23	1.4k 0.9×	951 1.0×	45 0.3×	103 0.6×	54 0.4×	69	1.5k
R. A. Sramek United States	28	2.9k 1.8×	1.6k 1.5×	232 1.4×	75 0.5×	64 0.5×	99	3.0k

Countries citing papers authored by D. B. Shaffer

Since Specialization

Citations

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

Fields of papers citing papers by D. B. Shaffer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by D. B. Shaffer. 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 D. B. Shaffer. The network helps show where D. B. Shaffer may publish in the future.

Co-authorship network of co-authors of D. B. Shaffer

This figure shows the co-authorship network connecting the top 25 collaborators of D. B. Shaffer. A scholar is included among the top collaborators of D. B. Shaffer 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 D. B. Shaffer. D. B. Shaffer 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

Shaffer, D. B., Moji Christianah Adeyeye, Adam M. Fimbo, et al.. (2025). The African Medicines Agency - A potential gamechanger that requires strategic focus. PLOS Global Public Health. 5(2). e0004276–e0004276. 2 indexed citations

Shaffer, D. B., et al.. (2025). A landscape analysis of the vaccine ecosystem in Africa: research and development funding, clinical trials, regulation, and manufacturing readiness. The Lancet Global Health. 13(11). e1983–e1990.

Zavala, R. T., D. A. Boboltz, D. J. Hutter, et al.. (2007). Simultaneous Optical and Radio Imaging and Optical Spectroscopy of the Algol Triple System. American Astronomical Society Meeting Abstracts. 211. 1 indexed citations

Herring, T. A., I. I. Shapiro, T. A. Clark, et al.. (1986). Geodesy by radio interferometry: Evidence for contemporary plate motion. Journal of Geophysical Research Atmospheres. 91(B8). 8341–8347. 51 indexed citations

Weistrop, D., P. Hintzen, D. B. Shaffer, & W. Romanishin. (1985). Optical and radio observations for the BL Lacertae objects 1219 + 28, 0851 + 202, and 1400 + 162. The Astrophysical Journal. 292. 614–614. 16 indexed citations

Wrobel, J. M., D. L. Jones, & D. B. Shaffer. (1985). Parsec-scale radio emission from the E/S0 galaxy NGC 3894. The Astrophysical Journal. 289. 598–598. 6 indexed citations

Weistrop, D., P. Hintzen, W. Romanishin, & D. B. Shaffer. (1984). A Closer Look at the BL Lac Object 1219+28. Bulletin of the American Astronomical Society. 16. 521. 1 indexed citations

Geldzahler, B. J. & D. B. Shaffer. (1981). Very high-resolution observations of compact radio sources in the directions of supernova remnants. The Astrophysical Journal. 248. 132–132. 5 indexed citations

Walker, R. C., A. C. S. Readhead, G. A. Seielstad, et al.. (1981). VLBI observations of SS 433 at 3.6 and 13 centimeters. The Astrophysical Journal. 243. 589–589. 1 indexed citations

10.

Kellermann, K. I., et al.. (1981). VLBI observations of the nucleus of the radio galaxy Cygnus A. NASA Technical Reports Server (NASA). 97(1).

11.

Kellermann, K. I., I. I. K. Pauliny‐Toth, В. И. Костенко, et al.. (1980). The Structure of the Nucleus of the Seyfert Galaxy NGC1275. 6. 42–47. 1 indexed citations

12.

Weistrop, D., H. J. Reitsema, D. B. Shaffer, & B. A. Smith. (1980). Visual and Far Red Surface Photometry of I Zw 1727+50. Bulletin of the American Astronomical Society. 12. 462. 1 indexed citations

13.

Preuß, E., I. I. K. Pauliny‐Toth, D. B. Shaffer, & K. I. Kellermann. (1980). High-resolution observations of the nucleus of 3C 390.3. The Astrophysical Journal. 240. L7–L7. 3 indexed citations

14.

Geldzahler, B. J., K. I. Kellermann, & D. B. Shaffer. (1979). High resolution observations of the compact radio sources CL4, Cygnus X-3, and the Galactic Center. The Astronomical Journal. 84. 186–186. 6 indexed citations

15.

Shaffer, D. B. & Alan P. Marscher. (1979). VLBI observations of galactic nuclei at 18 centimeters - NGC 1052, NGC 4278, M82, and M104. The Astrophysical Journal. 233. L105–L105. 5 indexed citations

16.

Shaffer, D. B.. (1978). Optical identifications of radio sources in the NRAO 5-GHz survey - The 'S2' and 'intermediate' surveys. The Astronomical Journal. 83. 209–209. 1 indexed citations

17.

Kellermann, K. I., D. B. Shaffer, I. I. K. Pauliny‐Toth, E. Preuß, & A. Witzel. (1976). Observations of a radio source in the nucleus of M81 with dimensions less than 1300 astronomical units. The Astrophysical Journal. 210. L121–L121. 10 indexed citations

18.

Kellermann, K. I., B. G. Clark, A. E. Niell, & D. B. Shaffer. (1975). Observations of compact radio nuclei in Cygnus A, Centaurus A, and other extended radio sources. The Astrophysical Journal. 197. L113–L113. 15 indexed citations

19.

Kellermann, K. I., B. G. Clark, D. B. Shaffer, et al.. (1974). Further Observations of Apparent Changes in the Structure of 3c 273 and 3c 279. The Astrophysical Journal. 189. L19–L19. 9 indexed citations

20.

Shaffer, D. B., M. H. Cohen, D. L. Jauncey, & K. I. Kellermann. (1972). Rapid Change in the Visibility Function of the Radio Galaxy 3c 120. The Astrophysical Journal. 173. L147–L147. 12 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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