D. Shaffer

发表

VLA observations of objects in the Palomar Bright Quasar Survey

Maarten Schmidt, K. Kellermann, R. Green, 1989 .

Improvements in the Accuracy of Geodetic Vlbi

W. E. Himwich, A. Niell, I. Shapiro, 2013 .

Geodesy by radio interferometry: Evidence for contemporary plate motion

I. Shapiro, T. Herring, A. Rogers, 1986 .

VizieR Online Data Catalog: Precise Radio Source Positions from Mark III VLBI (Ma+ 1990)

K. J. Johnston, J. L. Russell, David B. Shaffer, 1998 .

A New Transportable VLBI System

T. Clark, D. Shaffer, R. M. Allshouse, 1991 .

Very-Long-Baseline Radio Interferometry: The Mark III System for Geodesy, Astrometry, and Aperture Synthesis

C C Counselman, B Rayhrer, A E Rogers, 1983, Science.

High resolution observations of the compact radio sources CL4, Cygnus X-3, and the Galactic Center

K. Kellermann, D. Shaffer, B. Geldzahler, 1979 .

A compact radio source in the nucleus of M82.

B. G. Clark, K. Kellermann, D. Shaffer, 1969 .

Multiepoch VLBI observations of 4C 39.25 - Superluminal motion amid stationary structure

J. Romney, A. Marscher, D. Shaffer, 1987 .

The small-scale structure of radio galaxies and quasi-stellar sources at 3.8 centimeters.

W. Cannon, K. Kellermann, Maurice Cohen, 1971 .

Further monitoring of the structure of superluminal radio sources

R. Schilizzi, J. Romney, A. Moffet, 1979 .

The radio structure of radio loud and radio quiet quasars in the Palomar Bright Quasar Survey

Maarten Schmidt, K. Kellermann, R. Green, 1994 .

Radio sources with superluminal velocities

M. Cohen, R. Schilizzi, J. Romney, 1977, Nature.

Super-light motion in radio sources and its implications for the distance scale problem

K. Kellermann, D. Shaffer, 1977 .

The compact radio sources in 4C 39.25 and 3C 345. [quasars]

A. Niell, R. Schilizzi, K. Kellermann, 1977 .

Structure of the compact radio sources in NGC 1052 and NGC 4278

D. Jones, D. Shaffer, J. Wrobel, 1984 .

Observations of a radio source in the nucleus of M81 with dimensions less than 1300 astronomical units

K. Kellermann, D. Shaffer, I. Pauliny-Toth, 1976 .

Multifrequency VLA, VLBI, and Single-Dish Observations of the Quasar 4C 39.25

A. Marscher, M. Aller, Y. F. Zhang, 1991 .

Observations with a VLB array. I. Introduction and procedures

J. L. Yen, G. Swenson, R. Schilizzi, 1975 .

Observations with a VLB array. III - The sources 3C 120, 3C 273B, 2134+004, and 3C 84

J. L. Yen, R. Schilizzi, J. Romney, 1975 .

Observations with a VLB array. II - The sources 4C 39.25, NRAO 150, VRO 42.22.01, 3C 345, and 3C 454.3

R. Schilizzi, J. Romney, K. Kellermann, 1975 .

A Radio Optical Reference Frame. II. Additional Radio and Optical Source Positions in the Northern Hemisphere

K. Johnston, D. Shaffer, C. Vegt, 1991 .

Parsec-scale radio emission from the E/S0 galaxy NGC 3894

D. Jones, D. Shaffer, J. Wrobel, 1985 .

The NRAO 5-GHz radio source survey. III. The 140-ft

E. Fomalont, K. Kellermann, D. Shaffer, 1972 .

The 18-cm visibility functions of high-frequency compact sources (11)

R. Schilizzi, D. Shaffer, 1975 .

Observations of compact radio nuclei in Cygnus A, Centaurus A, and other extended radio sources

B. G. Clark, A. Niell, K. Kellermann, 1975 .

VLBI observations of the nucleus and jet of M87

K. Johnston, M. Reid, J. Schmitt, 1982 .

4C39.25 — A Contracting Source?

D. Shaffer, 1984 .

4C 39.25: superluminal motion between stationary components.

A. Marscher, D. Shaffer, 1987 .

High resolution observations of NGC1275 with a four-element intercontinental radio interferometer

D. Jones, M. Cohen, R. Schilizzi, 1976, Nature.

Milli-arcsecond structure of 3C 84, 3C 273, and 3C 279 at 2 centimeter wavelength. [radio galaxy and quasars]

B. G. Clark, A. Niell, D. Shaffer, 1975 .

Geodetic measurement of deformation in the Loma Prieta, California Earthquake with very long baseline interferometry

J. Sauber, T. Clark, D. Shaffer, 1990 .

VLBI and X-ray observations of compact nuclei in pairs of galaxies

R. Schilizzi, P. Kronberg, D. Shaffer, 1981 .

The small radio source at the galactic center

B. G. Clark, K. Kellermann, D. Shaffer, 1977 .

VLBI maps of 3C 147, 3C 286, 3C 380, NRAO 150, CTD 93 and 3C 395 at 2.3 GHz.

D. Shaffer, R. B. Phillips, 1983 .

Absence of Variations in the Nucleus of Virgo a

B. G. Clark, K. Kellermann, Maurice Cohen, 1973 .

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

K. Johnston, D. Shaffer, C. Vegt, 1990 .

Further observations of apparent changes in the structure of 3C 273 and 3C 279

B. G. Clark, A. Niell, K. Kellermann, 1974 .

The NRAO 5-GHz radio source survey. II. The 140-ft "strong", "intermediate", and "deep" source surveys.

E. Fomalont, M. Davis, K. Kellermann, 1972 .

CTD 93 and the Nature of Gigahertz Peaked Spectrum Radio Sources

T. Cornwell, K. Kellermann, D. Shaffer, 1999 .

Optical and radio observations for the BL Lacertae objects 1219 + 28, 0851 + 202, and 1400 + 162

D. Shaffer, D. Weistrop, P. Hintzen, 1985 .

CCD photometry of the BL Lacertae objects 1218+304, 1219+28, and 1727+50 - Point sources, associated nebulosity, and broad-band spectra

H. Reitsema, R. Mushotzky, B. Smith, 1981 .

Precision Geodesy Using the Mark-III Very-Long-Baseline Interferometer System

Alan Whitney, Gunnar Elgered, Thomas Herring, 1985, IEEE Transactions on Geoscience and Remote Sensing.

High-resolution observations of the radio emission from Beta Persei.

B. G. Clark, K. Kellermann, D. Shaffer, 1975 .

21 cm and 18 cm Observations of the Cygnus X-3 Radio Outburst

D. Shaffer, G. Shields, B. Schupler, 1972 .

RFI: Effects on Bandwidth Synthesis

David B. Shaffer, D. Shaffer, 2000 .

A Radio Reference Frame

D. R. Florkowski, M. S. Carter, K. Johnston, 1995 .

Optical identifications of radio sources in the NRAO 5-GHz survey: the "S2" and "intermediate" surveys.

D. Shaffer, 1978 .

VLBI observations of galactic nuclei at 18 centimeters - NGC 1052, NGC 4278, M82, and M104

A. Marscher, D. Shaffer, 1979 .

High-resolution observations of the nucleus of 3C 390.3

K. Kellermann, D. Shaffer, I. Pauliny-Toth, 1980 .

Variations in the Radio Structure of BL Lacerate

L. I. Matveyenko, B. G. Clark, K. Kellermann, 1973 .

POSITIONS OF RADIO SOURCES FROM LONG-BASELINE INTERFEROMETRY.

D. B. Shaffer, M. H. Cohen, M. Cohen, 1970 .

THE ALGOL TRIPLE SYSTEM SPATIALLY RESOLVED AT OPTICAL WAVELENGTHS

D. B. Shaffer, R. T. Zavala, C. Tycner, 2010, 1005.0626.

Optical Variability of Radio-Luminous PG Quasars

D. Shaffer, D. Weistrop, D. Eggers, 2000 .