D. B. Shaffer

3.0k citations

68 papers · 1.8k indexed · 1 hit paper · h-index 17

Impact in

Astronomy and Astrophysics top 1%
- Galaxies: Formation, Evolution, Phenomena
- Astrophysical Phenomena and Observations
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
Nuclear and High Energy Physics top 2%
- Astrophysics and Cosmic Phenomena

Papers in ⓘ

Instrumentation 13
- Astronomy and Astrophysical Research 13
Astronomy and Astrophysics 52
- Radio Astronomy Observations and Technology 33
- Galaxies: Formation, Evolution, Phenomena 12
- Gamma-ray bursts and supernovae 11

Co-authors: K. I. Kellermann (32 shared papers)Maarten Schmidt (3 shared papers)R. A. Sramek (3 shared papers)M. H. Cohen (15 shared papers)B. G. Clark (10 shared papers)D. L. Jauncey (6 shared papers)I. I. K. Pauliny‐Toth (12 shared papers)G. H. Purcell (6 shared papers)
Journals: The Astrophysical Journal (36 papers)The Astronomical Journal (12 papers)Nature (2 papers)Journal of Geophysical Research Atmospheres (1 paper)The Lancet Global Health (1 paper)
Partner nations: United States Germany South Korea

In The Last Decade

D. B. Shaffer

64 papers receiving 1.6k citations

Hit Papers

align trajectories log scale

VLA observations of objects in the Palomar Bright Quasar Survey 1989 · 772 citations

Peers

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-authors

The 25 scholars most cited alongside D. B. Shaffer, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with D. B. Shaffer Line = papers co-authored together D. B. Shaffer links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 68 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	VLA observations of objects in the Palomar Bright Quasar Survey The Astronomical Journal ·K. I. Kellermann, R. A. Sramek, Maarten Schmidt, D. B. Shaffer, R. Green Hit paper breakdown →	1989	772
2	The radio structure of radio loud and radio quiet quasars in the Palomar Bright Quasar Survey The Astronomical Journal ·K. I. Kellermann, R. A. Sramek, Maarten Schmidt, R. F. Green, D. B. Shaffer	1994	151
3	The Small-Scale Structure of Radio Galaxies and Quasi-Stellar Sources at 3.8 Centimeters The Astrophysical Journal ·M. H. Cohen, Walter F. Cannon, G. H. Purcell, D. B. Shaffer, J. J. Broderick, K. I. Kellermann, D. L. Jauncey	1971	89
4	A Radio Reference Frame The Astronomical Journal ·K. J. Johnston, A. L. Fey, N. Zacharias, J. L. Russell, Chao Ma, C. de Vegt, J. E. Reynolds, D. L. Jauncey, B. A. Archinal, M. S. Carter, T. E. Corbin, T. M. Eubanks, D. R. Florkowski, David Hall, D. D. McCarthy, P. M. McCulloch, E. A. King, G. Nicolson, D. B. Shaffer	1995	84
5	Radio sources with superluminal velocities Nature ·M. H. Cohen, K. I. Kellermann, D. B. Shaffer, R. P. Linfield, A. T. Moffet, J. D. Romney, G. A. Seielstad, I. I. K. Pauliny‐Toth, E. Preuß, A. Witzel, R. T. Schilizzi, B. J. Geldzahler	1977	72
6	Geodesy by radio interferometry: Evidence for contemporary plate motion Journal of Geophysical Research Atmospheres ·T. A. Herring, I. I. Shapiro, T. A. Clark, Chao Ma, James W. Ryan, B. R. Schupler, C. A. Knight, G. Lundqvist, D. B. Shaffer, N. R. Vandenberg, B. E. Corey, H. F. Hinteregger, A. E. E. Rogers, J. C. Webber, A. R. Whitney, Gunnar Elgered, B. O. Rönnäng, J. L. Davis	1986	51
7	Radio-source positions from VLBI The Astronomical Journal ·Chao Ma, T. A. Clark, J. Ryan, T. A. Herring, I. I. Shapiro, B. E. Corey, H. F. Hinteregger, A. E. E. Rogers, A. R. Whitney, C. A. Knight, G. Lundqvist, D. B. Shaffer, N. R. Vandenberg, J. C. Pigg, B. R. Schupler, B. O. Rönnäng	1986	35
8	Positions of Radio Sources from Long-Baseline Interferometry The Astronomical Journal ·M. H. Cohen, D. B. Shaffer	1971	26
9	Geodetic measurement of deformation in the Loma Prieta, California Earthquake with very long baseline interferometry Geophysical Research Letters ·T. A. Clark, Chao Ma, Jeanne Sauber, James W. Ryan, David Gordon, D. B. Shaffer, D. S. Caprette, N. R. Vandenberg	1990	25
10	THE ALGOL TRIPLE SYSTEM SPATIALLY RESOLVED AT OPTICAL WAVELENGTHS Maryland Shared Open Access Repository (USMAI Consortium) ·R. T. Zavala, C. A. Hummel, D. A. Boboltz, R. Ojha, D. B. Shaffer, C. Tycner, Mercedes T. Richards, D. J. Hutter	2010	25
11	Further monitoring of the structure of superluminal radio sources The Astrophysical Journal ·G. A. Seielstad, M. H. Cohen, R. P. Linfield, A. T. Moffet, J. D. Romney, R. T. Schilizzi, D. B. Shaffer	1979	25
12	Structure of the compact radio sources in NGC 1052 and NGC 4278 The Astrophysical Journal ·D. L. Jones, J. M. Wrobel, D. B. Shaffer	1984	22
13	The NRAO 5-GHz radio source survey. II. The 140-ft "Strong", "Intermediate", and "Deep" source surveys. The Astronomical Journal ·I. I. K. Pauliny‐Toth, K. I. Kellermann, Mike Davis, E. B. Fomalont, D. B. Shaffer	1972	20
14	The small radio source at the galactic center The Astrophysical Journal ·K. I. Kellermann, D. B. Shaffer, B. G. Clark, B. J. Geldzahler	1977	20
15	A radio optical reference frame. I - Precise radio source positions determined by Mark III VLBI - Observations from 1979 to 1988 and a tie to the FK5 The Astronomical Journal ·Chao Ma, D. B. Shaffer, C. de Vegt, K. J. Johnston, J. L. Russell	1990	19
16	The parsec-scale radio jet of 4C 39.25 The Astrophysical Journal ·A. Alberdi, J. M. Marcaide, Alan P. Marscher, Y. F. Zhang, P. Elósegui, José L. Gómez, D. B. Shaffer	1993	19
17	High resolution observations of NGC1275 with a four-element intercontinental radio interferometer Nature ·I. I. K. Pauliny‐Toth, E. Preuß, A. Witzel, K. I. Kellermann, D. B. Shaffer, G. H. Purcell, G. Grove, D. L. Jones, M. H. Cohen, A. T. Moffet, J. D. Romney, R. T. Schilizzi, R. Rinehart	1976	17
18	Optical and radio observations for the BL Lacertae objects 1219 + 28, 0851 + 202, and 1400 + 162 The Astrophysical Journal ·D. Weistrop, P. Hintzen, D. B. Shaffer, W. Romanishin	1985	16
19	Observations of compact radio nuclei in Cygnus A, Centaurus A, and other extended radio sources The Astrophysical Journal ·K. I. Kellermann, B. G. Clark, A. E. Niell, D. B. Shaffer	1975	15
20	Very high-resolution observations of the radio sources NRAO 150, OJ 287, 3C 273, M87, 1633 + 38, BL Lacertae, and 3C 454.3 The Astrophysical Journal ·K. I. Kellermann, D. B. Shaffer, G. H. Purcell, I. I. K. Pauliny‐Toth, E. Preuß, A. Witzel, D. A. Graham, R. T. Schilizzi, M. H. Cohen, A. E. Niell	1977	15

About D. B. Shaffer

D. B. Shaffer is a scholar working on Instrumentation, Astronomy and Astrophysics, Nuclear and High Energy Physics, Computational Mechanics and Oceanography, having authored 68 papers that have together received 1.8k indexed citations. Recurring topics across this work include Astrophysics and Cosmic Phenomena (33 papers), Radio Astronomy Observations and Technology (33 papers), Astronomical Observations and Instrumentation (15 papers), Astronomy and Astrophysical Research (13 papers), Galaxies: Formation, Evolution, Phenomena (12 papers), Gamma-ray bursts and supernovae (11 papers), GNSS positioning and interference (10 papers) and Particle Accelerators and Free-Electron Lasers (7 papers). The work is most often cited by research in Astronomy and Astrophysics (1.6k citations), Nuclear and High Energy Physics (1.0k citations), Instrumentation (160 citations), Oceanography (132 citations) and Aerospace Engineering (159 citations). D. B. Shaffer has collaborated with scholars based in United States, Germany and South Korea. Frequent co-authors include K. I. Kellermann, Maarten Schmidt, R. A. Sramek, M. H. Cohen, B. G. Clark, D. L. Jauncey, I. I. K. Pauliny‐Toth, G. H. Purcell, Chao Ma and B. J. Geldzahler. Their work appears in journals such as The Astrophysical Journal, The Astronomical Journal, Nature, Journal of Geophysical Research Atmospheres and The Lancet Global Health.

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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