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The 6m mm-VLBI telescope at Kagoshima, Japan

  • Toshihiro Omodaka (a1), Masaki Morimoto (a2), Noriyuki Kawaguchi (a2), Yoshimi Kitamura (a3), Minoru Tanaka (a4), Seisuke Kuji (a5), Keisuke Miyazawa (a2), Takeshi Miyaji (a2), Hiroshi Mikoshiba (a2), Risao Hayashi (a6), Takahiro Kitagawa (a6), Jyunya Maneki (a6), Tomoya Suzuyama (a6), Makoto Inoue (a2), Mitsumi Fujishita (a7), Tetsuo Sasao (a5), Ley Furuya (a4), Kazuhide Miyasato (a7) and Takaaki Jike (a4)...

Extract

VLBI observations of millimeter wavelengths can probe the broad line emission and jet forming regions of quasars, and the scale of an accretion disk around massive black holes in nearby active galaxies, which are self-absorbed at longer wavelengths. Therefore, the extension of the mm-VLBI network is timely and urgent problem. We are now planning to move Nobeyama 6 m mm VLBI telescope to Kagoshima. The telescope will be placed at Kinkohwan park in Kagoshima City in late 1992 and will be operated in 1993. The frequencies for VLBI observations will range from 22 GHz to 100 GHz.

To date, there are two mm-VLBI facilities in Japan: Nobeyama 45 m and Kashima 34 m, However, the longest baseline is only about 200km EW which provides a fringe separation of 17 mas. This is not sufficient for high resolution mapping. A 10 m telescope which is under construction at Mizusawa, 400 km north from Kashima which will be usable up to 43 GHz and will add a north-south baseline, which is very important for astrometrie measurement.

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References

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1. Kawaguchi, N.: 1991, FRONTIERS OF VLBI, eds. Hirabayashi, H., In-oue, M. and Kobayashi, H., Universal Academy Press, Tokyo, Japan, p. 269.

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