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VLBA Studies of the Accretion Region in NGC 1275

Published online by Cambridge University Press:  13 May 2016

R. C. Walker ,
K. I. Kellermann ,
V. Dhawan ,
J. D. Romney ,
K. R. Anantharamaiah ,
R. C. Vermeulen  and
W. Alef
R. C. Walker
Affiliation:
National Radio Astronomy Observatory, Socorro, NM U.S.A.
K. I. Kellermann
Affiliation:
National Radio Astronomy Observatory, Charlottesville, VA U.S.A.
V. Dhawan
Affiliation:
National Radio Astronomy Observatory, Socorro, NM U.S.A.
J. D. Romney
Affiliation:
National Radio Astronomy Observatory, Socorro, NM U.S.A.
K. R. Anantharamaiah
Affiliation:
Raman Research Instutute, Bangalore, India
R. C. Vermeulen
Affiliation:
Netherlands Foundation for Radio Astronomy, Dwingeloo, The Netherlands
W. Alef
Affiliation:
Max-Plank-Institut für Radioastronomie, Bonn, Germany

Abstract

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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.

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 48 - 49
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Levinson, A., Laor, A., & Vermeulen, R. C. 1995, ApJ, 448, 589.CrossRefGoogle Scholar
Walker, R. C., Dhawan, V., Romney, J. D., Kellermann, K. I., and Vermeulen, R. C. 2000, ApJ, 530, 233.CrossRefGoogle Scholar