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Publication
Featured researches published by W. Alef.
International Astronomical Union Colloquium | 1998
R. C. Walker; K. I. Kellermann; V. Dhawan; J. D. Romney; J. M. Benson; R. C. Vermeulen; W. Alef
Multi-frequency VLBA observations were used to study the magnitude and radial dependence of free-free absorption of the radio emission from the counterjet in 3C 84.
Symposium - International Astronomical Union | 2001
R. C. Walker; K. I. Kellermann; V. Dhawan; J. D. Romney; K. R. Anantharamaiah; R. C. Vermeulen; W. Alef
VLBA observations of the two-sided emission structures in 3C 84 have been used to study the ionized gas in the vicinity of the presumed accretion disk on parsec scales. Strong free-free absorption is seen with a radial gradient, but only upper limits have been obtained on a stimulated recombination line at 23 GHz.
Astronomy and Astrophysics | 1996
W. Alef; S. Y. Wu; Eugen Preuss; K. I. Kellermann; Y. H. Qiu
Proceedings of The International Astronomical Union | 1988
W. Alef; Eugen Preuss; Kenneth I. Kellermann; N. D. Whyborn; Peter N. Wilkinson
Archive | 1999
R. C. Walker; K. I. Kellermann; V. Dhawan; J. D. Romney; John M. Benson; Rene Vermeulen; W. Alef
Archive | 1990
Eugen Preuss; W. Alef; Sheng-Yin Wu; Yuhai Qiu; Zhihan Qian; K. I. Kellermann; Leonid I. Matveenko; Michaela M. A. Gotz
Proceedings of The International Astronomical Union | 1988
Eugen Preuss; W. Alef; Kenneth I. Kellermann
Astronomy and Astrophysics | 1988
W. Alef; M. M. A. Goetz; Eugen Preuss; Kenneth I. Kellermann
Proceedings of The International Astronomical Union | 1987
Eugen Preuss; W. Alef
Proceedings of The International Astronomical Union | 1984
Eugen Preuss; W. Alef; N. D. Whyborn; Peter N. Wilkinson; Kenneth I. Kellermann
Collaboration
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