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MM-VLBI Survey of Spectral Index on AGN

Published online by Cambridge University Press:  12 April 2016

K. Matsumoto ,
N. Kawaguchi ,
M. Inoue ,
H. Takaba ,
Y. Koyama ,
T. Iwata  and
N. Kurihara
K. Matsumoto
Affiliation:
Univ. of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182
N. Kawaguchi
Affiliation:
NRO, 411 Minamimaki, Minamisaku, Nagano, Tokyo 384-13
M. Inoue
Affiliation:
NRO, 411 Minamimaki, Minamisaku, Nagano, Tokyo 384-13
H. Takaba
Affiliation:
Kashima Space Research Center, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314
Y. Koyama
Affiliation:
Kashima Space Research Center, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314
T. Iwata
Affiliation:
Kashima Space Research Center, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314
N. Kurihara
Affiliation:
Kashima Space Research Center, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314

Abstract

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The preliminary results of an mm-VLBI survey of spectral index on active galactic nuclei (AGN) are presented which suggest that their activities are only in the central regions. The difference in central activities may correspond to their different stages of evolution. We found a strong concentration to α = 0 for quasar and a spread distribution for HPQ.

Type
1. Recent Developments and Upgrading Plans for the Near Future
Information
International Astronomical Union Colloquium , Volume 140: Astronomy with Millimeter and Submillimeter Wave Interferometry , 1994 , pp. 56 - 57
Copyright
Copyright © Astronomical Society of the Pacific 1994

References

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